I thought I read somewhere something like having someone drafting behind also has effect to the rider in front. I wonder if it's true and would like to understand how does it work because it's quite unintuitive (if it's true at all).  So, other than robbing the rider in front from tailwind, does the drafter help at all?
65843
I know that when riding close to another cyclist, I expend less energy to go the same speed. But does the Conservation of Energy "law" mean that the lead cyclist is going to expend more energy to allow me to expend less?  (i.e. Is there a physical reason to get angry at someone drafting behind you? Does riding in their slipstream cause drag for them?)
98740
Earlier tonight, I was playing magic. My opponent had a card out that allowed him to place a 2/2 goblin token on the board for every creature that made an attack. He also had one out that allowed him to sacrifice one of his creatures and destroy any nonland permanent.  He declared an attack with one of the goblin tokens, thus placing another goblin token on the board. He then sacrificed the attacking token before it attacked and my blocker destroyed it.  I'm new to the game, but it seems to me that if he sacrificed it prior to its attack, it shouldn't have counted as an attack. So he couldn't have placed the new token on the board. Am I wrong?
93062
My opponent controls a . I control a 4/4 creature (with a -1/-1 counter on it, due to an earlier cast ).  If I use an ability to put a +1/+1 counter on my 4/4 creature, will the +1/+1 counter and the -1/-1 counter cancel each other out, or will I just have a creature with both a +1/+1 counter and a -1/-1 counter on it?  In other words: Will my creature be able to block and attack or not?  I don't believe the rules are 100% clear on that?! (rule 704,5)
8069
I was watching the movie 21 yesterday, and in the first 15 minutes or so the main character is in a classroom, being asked a "trick" question (in the sense that the teacher believes that he'll get the wrong answer) which revolves around theoretical probability.  The question goes a little something like this (I'm paraphrasing, but the numbers are all exact):  You're on a game show, and you're given three doors. Behind one of the doors is a brand new car, behind the other two are donkeys. With each door you have a $1/3$ chance of winning. Which door would you pick?  The character picks A, as the odds are all equally in his favor.  The teacher then opens door C, revealing a donkey to be behind there, and asks him if he would like to change his choice. At this point he also explains that most people change their choices out of fear; paranoia; emotion and such.  The character does change his answer to B, but because (according to the movie), the odds are now in favor of door B with a $1/3$ chance of winning if door A is picked and $2/3$ if door B is picked.  What I don't understand is how removing the final door increases the odds of winning if door B is picked only. Surely the split should be 50/50 now, as removal of the final door tells you nothing about the first two?  I assume that I'm wrong; as I'd really like to think that they wouldn't make a movie that's so mathematically incorrect, but I just can't seem to understand why this is the case.  So, if anyone could tell me whether I'm right; or if not explain why, I would be extremely grateful.
97698
Let's suppose there are creatures in play and someone plays .  It's clear that all the creatures lose their abilities.  How is this situation changed if  were in play?  Is the situation changed if True Conviction were played after Humility?  Is the solution to this question that the card with the newest time stamp is in effect?
44287
We are in the combat phase:   I declared my attackers  My opponent declared his blockers, stating which attackers he was blocking I cast an instant, which automatically kills his blocker. There is nothing blocking my attacker now   Now we're in the damage phase. I said that my attacker now does damage and  reduces my opponent's hit points. My opponent said that because my attacker was blocked no damage could be done. I pointed out that the blocker was destroyed before the damage phase, so therefore he wasn't blocking, but he wasn't having it. (My attacker does not have trample)  Is this covered by a specific section in the rules?
44517
Two players in IPL 6 (2013), Ricky Ponting and Glen Maxwell, were bought in the player auction for large sums (Ponting close to half a million and Maxwell over 1 million dollars).  Neither of these players ended up playing many games. Ponting played the first 6 and Maxwell just 3. In this case (and I'm sure many other similar examples) do the players get all of that sum, or are they paid on a pro-rata basis. For instance if they played only half the games they would get half the amount?
25456
A fighter, once per rest, can use Action Surge to gain an additional action on his turn.  The target of a Haste spell also gains an additional action on his turns (until the spell ends).  If a fighter is Hasted by a fellow mage and then uses his Action Surge, does he gain two additional actions on his turn (for a total of 3 actions, plus the eventual bonus action &amp; reaction) ?
33604
Suppose I am within counterspell range of an enemy mage (who has counterspell) and want to guarantee that my spell won't be countered.   Could I do so entirely on my turn by moving behind full cover, then casting the spell with the ready action using a trigger of "when I have an unobstructed line of effect to the enemy mage", and then moving out from cover and releasing my spell?   Using my reaction seems like a fairly (or even unfairly) low cost to be able to deny a counterspell, but maybe the requirement for full cover is enough to make it a justifiable reward for making good use of the environment.
79866
So here is one I wish to know:   I use Tri-Gate second effect, which allows me to target and banish one card on the field. Then I link that with another monster to bring out another link. Tri-Gate would be in the graveyard but then I use transcodes effect (1 of the 3 co-links) to bring it back from the graveyard.   Can I use the second effect again?
56734
The second benefit of the  feat says (PHB, p. 168):        You can force an attack targeted at your mount to target you instead.       I was playing a campaign, and my DM attacked the mount. Imagine this is the battlefield (seen from above); I was on the C, my mount is large (A), and the monster is M:  # # # # # # # # # # A C # # # # # A A # # # # M # # # # # # # # # # #   When I said "I deflect the attack to me," the DM said "But the foe does not reach you, which means you can't pull the attack to yourself." That got me thinking. I'm wanting to know how this works in this situation.  How does the attacker's reach interact with Mounted Combatant's ability to force an attack against the mount to target the rider instead?
119240
In the upcoming set 'War of the Spark' there is the Planeswalker . His -2 ability reads as:      -2: You may choose an artifact card you own from outside the game or in exile, reveal that card and add it to your hand    Now my question is, in a sealed tournament, like the Prerelease, is a player allowed to also choose cards from outside his sealed cardpool, or only out of the cards therein. Does anyone know any rulings on stuff like that?
119628
I was playing with my fiancée and some friends, and she's adamant that if you can yell Uno before someone who has just played their second to last card, they are required to pick up the penalty amount of cards.  Is this kosher?
16268
I was guessing, since you actually target things instead of just dealing damage (similar to ), 's triggered abilities would actually go on the stack.  This came up in a separate game this past Friday when the Sliver deck attacked with two s, one , and two s while his opponent had a  as well as some 2/2.  The reason this even came up was because, if the triggers went on the stack, you could target things so they resolve in the following order:   Predatory Sliver targets Blood Artist, killing it. Predatory Sliver targets the 2/2, dealing one damage to it. Thorncaster Sliver targets the 2/2, killing it. and 5. Both Manaweft Slivers target the player, dealing one damage each to him.
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?
37069
I had to make a call today and I'm wondering how this scenario should've gone down   The map was a U-shaped hallway; the party was on the lower left of the U, with the enemies on the upper right. The wizard has an owl familiar who could see an enemy caster, with the wizard seeing through the familiar's eyes, and the wizard was further back.   The enemy caster cast a fireball.  The player claims that since he was looking through the owl's eyes from his turn, he should technically have line of sight for a counterspell.   Could counterspell be cast in this case, even though there was a wall between him and the caster, and he was physically not able to cast towards the enemy caster?  Was I wrong in said judgement?
120886
Can someone explain intuitively why this is 52 C 5?  What does it mean that the "order doesn't matter?" If I wanted to pick 5 cards from a 52 card deck, why wouldn't I just do 52!/47! since there are 52 spots for the first card, 51 for the second, 50 for the third, etc.?  Any help would be greatly appreciated!