Alright, so me and my pal are working through making a 5e fighty Cleric. He wants to take the Sentinel and Shield Master feats. Sentinel and Shield Master's relevant parts read:  Sentinel  You have mastered techniques to take advantage of every drop in any enemy's guard, gaining the following benefits:    Creatures within 5 feet of you provoke opportunity attacks from you even if they take the Disengage action before leaving your reach.    Shield Master  You use shields not just for protection but also for offense. You gain the following benefits while you are wielding a shield:    If you take the Attack action on your turn, you can use a bonus action to try to shove a creature within 5 feet of you with your shield.   Shoving allows you to make a Strength (Athletics) Check versus either their Strength (Athletics) or Dexterity (Acrobatics) check, and if you succeed you can either knock the target prone or push them 5 feet away. So my buddy came up with the idea of using the Shield Master's Bonus Action to shove a creature during the Attack Action, and then taking an Opportunity Attack from the Sentinel Feat, since they left his reach (he is wielding a sword, in case that matters here). So the so the question is: Can the Shove Action provoke Opportunity Attacks as described by the Sentinel Feat? It just occurred to me that perhaps the Shield Master portion isn't important for the question, but perhaps it is relevant. Sentinel does describe Opportunity Attacks in a slightly different way than they are described on page 195 of the PHB.
17200
If I cause an opponent to leave my reach with an ability, spell, or effect can I use my reaction to take an Opportunity Attack against them?
59207
The  feat (PHB, p. 168) says:     While you are wielding a glaive, halberd, pike, or quarterstaff, other creatures provoke an opportunity attack from you when they enter your reach.   The  feat (PHB, p. 170) says:     When a hostile creature's movement provokes an opportunity attack from you, you can use your reaction to cast a spell at the creature, rather than making an opportunity attack. The spell must have a casting time of 1 action and must target only that creature.   On this very topic, Mearls has :     Q: Do Polearm Master and War Caster combine to allow a magic user to make a spell opportunity attack when they enter reach?   A: No - polearm master applies only if you use the weapons it lists to make the attack     Another question on this very topic:   But since then, we now have spells like  (SCAG, p. 142):     As part of the action used to cast this spell, you must make a melee attack with a weapon against one creature within the spell’s range, otherwise the spell fails. On a hit, the target suffers the attack’s normal effects, and it becomes sheathed in booming energy until the start of your next turn. If the target willingly moves before then, it immediately takes 1d8 thunder damage, and the spell ends.    So, with the addition of booming blade, if I have a quarterstaff + War Caster + Polearm Master, could I use my reaction to cast booming blade if someone steps into my reach?
10778
If, say, a Fighter is engaged in melee with an orc, can the Cleric, starting 10' away from the Orc, move 5' toward the orc, Help the Fighter (to give him Advantage), then move away 25'? He would provoke an attack of opportunity, but would the Help action still work?   Put another way, do you have to be within 5' of the target when the Helped friendly creature attacks in order for it to gain Advantage, or only during your (Help) action?
12832
Suppose that, on your turn, you ready an action to hit the enemy in front of you if he tries to hit your friend.  What else can you do in the turn you ready the action?   (I'm asking about the turn during which you decide to ready the action "hit the enemy" - not about extra things to do as part of the readied action itself, e.g. "hit the enemy and then move away".)  Can you, for example, move close to an enemy and then ready the attack if he hits your friend?  Can you move closer to an enemy, hit him with your offhand weapon (bonus action) or use some other abilities (Second Wind for fighters) and then ready the action to attack if he hits your friend?
40334
I'm working on a Paladin/Warlock combination, based off of , and as part of this, I noticed Miniman's remark that Repelling Blast won't be that useful, because as a Paladin, you want people up close and personal when you're in a combat situation, not further away.  However, as a Paladin, your creed sometimes leads you to not want to engage in full-blown combat with a potential adversary -- you may want to drive them off or incapacitate/capture them instead.  With this, I wonder: can Repelling Blast, or other spells and spell-likes (such as invocations), be made to do non-lethal damage?  If so, I'm thinking that it'd be useful in exactly that sort of situation -- halting someone/pushing them away without having to wade into a melee with them or blow them to smithereens.
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For example, if one wanted to trigger the benefit of the Mobile feat, wherein you can move away from a creature you made an attack against without provoking an opportunity attack, can you choose to miss the attack on purpose?  The mechanical benefit of this over taking the Disengage action would be that you can use the rest of your attacks from the Extra Attack feature, or still use TWF's bonus action, or potentially save an "on next hit" ability or effect for a different non-adjacent creature on the same turn without taking an attack of opportunity from, or damaging, the currently adjacent creature.
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I’m looking for clarification regarding combat space in a one-on-one combat situation, since it impacts disadvantage rolls and opportunity attacks.   If a medium size opponent attacks you with a melee weapon (one that does not increase reach), it’s assumed they are within 5′ of you (PHB 146).   Based on the “SPACE” section in PHB 191-2, they are in one of 8 squares bordering yours.  Regardless of whether it’s a hit or miss, it’s now your turn.    You’re a spell caster that only has an option of a ranged spell.  Let’s assume you have no ‘touch’ spells and no melee weapon.  Based on PHB 195, would you have disadvantage on your ranged spell attack roll because you’re within 5′?  Or because each creature is in its own 5′ space, there is really 10′ between them combined, so there would be no disadvantage roll on the ranged spell attack?
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The rules packet does not provide any specific rules about flanking.  However the rule does say that the DM has lots of leeway in deciding when to give advantage or disadvantage in combat.  Should it be understood that flanking always gives advantage, or is the DM supposed to only give advantage when there is "clever flanking"?  What is the best way to handle "flanking" in D&amp;D 5e?
110943
The rules for  state:     When you take the Attack action and attack with a light melee weapon that you're holding in one hand, you can use a bonus action to attack with a different light melee weapon that you're holding in the other hand.   Emphasis mine. Now, under most circumstances you would wield two light melee weapons, attack with at least one of them during your Attack action, and attack again as a bonus action. However, the rules themselves just say "take the Attack action and attack with a light melee weapon", not specifically "take the Attack action to attack with a light melee weapon" or "attack with a light melee weapon during an Attack action".  In other words, both the requirements "took the Attack action" and "made an attack with a light melee weapon held in one hand" need to be met during a turn, but the light melee weapon could be used to attack separately from the Attack action. Is that correct?  An example for how to accomplish this: An Eldritch Knight Fighter takes the  cantrip and the Dual Wielder feat. That Fighter takes the Attack action, attacking with a Greatsword, then uses Action Surge to take an additional action. He drops the Greatsword (everything I've seen indicates that dropping a weapon doesn't even require an object interaction), then draws two light melee weapons as permitted by Dual Wielder. For the second action, the Fighter casts  (SCAG, p. 142) which states:     As part of the action used to cast this spell, you must make a melee attack with a weapon against one creature within the spell’s range   Thus, after those two actions the Fighter would have both taken the Attack action and made an attack with a light melee weapon in the same turn, and I would expect he could use two-weapon fighting to make a bonus action attack with the weapon not used during booming blade.  Note that this scenario is just an example; I'm not 100% certain there's a way to cast booming blade while holding two melee weapons, but I know there are other ways to make an attack outside of the Attack action and I just couldn't find one quickly that was more definitively possible.
32006
"You can make an opportunity attack when a hostile creature that YOU CAN SEE moves out of your reach."   In 5E do you have to specify which way your character is facing at all times?  If an enemy who is behind him leaves melee range but his back is to him does that enemy provoke an opportunity attack?    Are enemies within five feet and 360 degrees of a character considered to be within reach?  For example... Kruska and Atone are attacking Dip.  Dip is facing or only attacking Kruska.    Then Atone moves out of Dip's reach (melee range 5 feet) to engage a silly looking wizard.    Does Atone's move provoke an opportunity attack from Dip even though he's not facing him?  Is he assumed to be able to see him?
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(PHB p. 195) states:     Using the Attack action, you can make a special melee attack to shove a creature   Can the additional attack action granted by the haste spell also be used to shove a creature?
108405
Assume that my character has Improved Unarmed Strike (to threaten squares nearby) and Improved Grapple (to prevent getting AoOs from grappling). Now, an enemy provokes attack of opportunity.  states that attempting to grapple is an attack, so it can be done as an attack of opportunity. Thus, my character decides to grapple instead of just attacking. My character hits the melee touch attack, and now he can grapple the opponent.  My question is:    states that holding by making opposed grappling check is actually a free action, which can be done only in my turn. Normally this shouldn't be a problem, but since this isn't my turn, it means I cannot perform my opposed grappling check. Does this mean I cannot maintain grapple until I get to my turn? Or, should I disregard the "free action" thing? If I successfully grab an opponent casting a spell with somatic component (via an AoO), what happens to the spell? I know that spellcasters cannot start casting spells with somatic component, but what happens to a spell that was being cast? This may be ridiculous, but can I grapple an opponent trying to grapple (without Improved Grapple) as an AoO?
118365
I was surprised to find no mention of this in the  or : if an enemy moves from tile A to tile B and provokes an opportunity attack from me in doing so, are they in tile A or B when I perform the opportunity attack?  This is a minor detail, but pretty significant!   I'm a mundane human with a sword and threaten squares adjacent to me. If my enemy starts their turn adjacent to me then walks away out of range, do I make an opportunity attack as if they're still in range, or do I lose it because they're too far away? I have a spear with a , and I can't attack foes in adjacent squares with it. An enemy walks up to me, through my threatened range of 10 feet. When they leave my threatened tile to step up adjacent to me, do I take an opportunity attack as if they're 10 feet away, or do I lose it because they're too close? Let's say I'm Gargantuan, and an enemy wants to walk through my range. When they take the movement which provokes an opportunity attack from me, where are they when I make my opportunity attack? (Pretend it's very important: I have an ability that will cast in a straight line and might hit multiple targets or none at all, or I might inadvertently smash a pressure plate, etc)   In all cases, ignore 5-foot steps and pretend my enemy has walked far enough to provoke an opportunity attack.
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For example, the shield mastery feat gives the option to shove an adjacent creature 5ft as a bonus action. Could you make an Opportunity Attack on the creature because it leaves your threat range without using the disengage action?
88088
You can move through an ally's position (as difficult terrain), but can you attack through it at no cost?   If you have 10' reach, but there is an ally between you and the target, does the target get the +2 cover or is that ignored as friendly ally who could move away?
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My understanding, confirmed by the answer to this question:  is that anywhere an actual +N bonus to AC is listed, they all stack.  So does the following work, or is there some conflict between some of these that would not allow them to be used together?  Barbarian 1 / Cleric 1 / Wizard 5  Unarmored, with a shield. Con 18, Dex 15   Base AC is 10 + 2 (dex) + 4 (con) = 16 Shield (+2 AC) raises this to 18   Casts Haste as an action and Shield of Faith as a Bonus Action (a house rule allows 2 concentration spells):   Haste gives +2 AC, for AC 20 Shield of Faith gives +2 AC, bringing AC up to 22   If she ever gets hit, cast Shield as a reaction:   an additional +5 to AC bringing AC up to 27 for one round   I know all of these would stack, but does anything prevent them from all being used together?
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I was looking at the list of familiars you can obtain with the Improved Familiar feat when I noticed none of them had a stat bonus like the normal familiars did.(Example: The Cat familiar grants "Master gains a +3 bonus on Stealth checks")  Are you sacrificing a feat slot AND the bonuses familiars grant to you to have a better familiar? It isn't a huge blow but it seems that if you sacrifice a feat you shouldn't lose a bonus that is given as a base ability.