Pointed Discussion

The only SINGLE card that could potentially win you the game on the first turn.

Yay, a card that has the same name as what Magic was originally called when Richard Garfield first thought it up!

Seriously, what's the point of even playing with this card. Takes the whole fun out of the game.

Cmon smetal, this is funny card

I wish I had The Force. Than I could use it to make the opponent's coin tails every time and mine heads every time.

Goblin Game this with Game of Chaos that, let's see who really knows how to Gamble.

Fun with Krark's Thumb (Mirror Gallery optional). Maybe throw in Urza's Armor or Sphere of Law (or perhaps even Glacial Chasm or a concurrent Samite Ministration) for insurance. I mean, hey, there's only a 12.5% chance (three heads) that the clash will be forced to end, and if you're not taking any damage...

AGH!
Sorry Applecorn, I accidently hit the report abuse button. :'(
I hurriedly cliked a different link before the page loaded, so I don't know if it registered or not.
Anyways, looks like a fun deck. Run all the coin-flip cards, like Game of Chaos, with the Krork's thumb, and all the other stuff, and that would be a really fun deck. :)

I did a bit of simulation to evaluate this card. Here's what I came up with, using 10 million iterations with a pseudo-random coin flip.

With no Krark's Thumbs in play:
Average 1.92 damage to you
Average 1.96 damage to your opponent

With one Krark's Thumb in play (assuming you always choose to keep the flip going, even if this will kill you. Dumb I know, but it gets the point across number-wise):
3.97 damage to you
3.98 damage to your opponent

With two Krark's Thumbs and a Mirror Gallery in play (same algorithm as with one thumb. Note that with two Thumbs in play, you flip 4 coins each run instead of 1):
16.00 damage to you
16.00 damage to your opponent

With three Krark's Thumbs and a Mirror Gallery in play (8 flips):
255.98 damage to you
255.91 damage to your opponent

Notice a pattern? 2^1, 2^2, 2^4, 2^8. I predict with four Thumbs, the damage would average at 2^16, which is 65536. In any case, looks like you would require many, many thumbs to win consistently with this card alone, and you'd need at least 1 thumb for it to be better than Lightning Bolt on average. Neat though. I give it 4.29/5.

This is an amazing card with a Krark's thumb and Purity

Just keep it going as long as you can. Also copying it if you can with a Djinn Illuminatus, Mirari, Reiterate or a Twincast etc etc... is amazing.

I've won a bunch of games against my friends by having Purity out with this.. yummy..

Guest51 somethin or another is leaving out the human element, algorithms and statistics are awesome but you might wanna get into game theory, whether or not a player is going to continue or not. and I find it hard to believe that a pseudorandom coinflip made each player take the saaaame amount of damage eaach time after 10 million iterations. In fact, The pattern of 2^1 and 2^2 and so on seems to indicte the simulation is just taking the number of players and putting it to the xth power where x is the amount of coinflips, so it seems like a rather silly simulation to me. Maybe I am missing something you could enlighten me on? And with 8 flips chances are you aren't going to take any damage at all, because the chances are that if you flip a coin 8 times you are going to hit one heads and then use The thumbs other effect to cancel out all the rest of the flips

And dont ever build a deck with this to win, if you do, you are completely missing the point.

A friend of mine has a fun casual coin flip-based deck, and among the most amazing things I've ever seen is a turn-one win with simply Mountain, Mana Clash, and thirty-seven pairs of coin flips. I tried to calculate the probability of this happening and my mind melted. A stunningly rare occurrence, and that's all that needs to be said.

Better yet, donatePrototype Portal with Krark's thumb imprinted, Panoptic mirror with this imprinted, priest of titania with umbral mantle equipped, orochi leafcaller, and filigree sages to an opponent, and have three elves and a mirror gallery on your side of the field. Then mindslaver your opponent. During their upkeep, you make one billion+ thumb tokens, then have the panoptic mirror trigger resolve. You get to flip for your opponent until they get a heads (should happen before the one billionth time, right?), then keep doing it, not caring about the damage you are taking because of your Urza's Armor.

Cards that interact with Mana Clash more powerfully than you might initially expect:
Quest for Pure Flame - It will be active pretty quickly.
Equal Treatment - Each clash will deal 2 damage.
Pyromancer's Swath - Increases each clash by 2 damage (to 3); similar to Tok-Tok, Volcano Born.
Sphere of Law/Urza's Armor - Prevents damage to yourself from each clash.
Talon of Pain - It'll charge up relatively quickly.
Tamanoa/Purity + Ajani's Pridemate - Ajani's Pridemate will get very large.

Rulings Question: How would this work with Krark's Thumb? Wouldn't you have to decide which coin to keep before your opponent showed you his/her coin? Because theoretically your two-coin flip is supposed to be happening at "the same time" as your opponents' one coin flip, which would make it cheating if you saw what your opponent flipped before you chose which coin to keep as your result.