For the record, I'm pretty sure you can't respond to the result of the coin flip, meaning you would need to cast boros charm / sac selfless spirit without knowing if you will win the flip or not.
Agreed, sweepers are typically played in decks that can play around the symmetry. You don't play Disk / Wrath of God in a deck with Goblin Guide / Thalia, etc.
It might be worth replacing Larry Nevin's Disk because it can hit planeswalkers. That's the best thing going for it that I can see.
Overall I would call that a drawback, not a benefit, as sweepers see more play in the grindy control decks that usually play more walkers to begin with. My favorite part of disk is that it clears away everything but my walkers, letting me pull further ahead straight away.
Yup. The best argument for still including Disk is the ability to deckbuild the effect into asymmetry.
As someone who has won 9/10 and 8/9 flips before (one was a GG trigger, but the math worked out that I shouldn't have hit as many lands as I did, but still!), there's no way I'd want to rely on flipping for this card because the opposite, i.e. losing all your flips, can certainly happen.
The chance for this card to miss after X activations is simply: 50% 25% 12.5% 6.25% 3.125% ...
On average it goes off one turn after playing it (like Disk), but in more than 1/10 of the games it takes three attempts to go boom, and in more than 1/20 it even takes four attempts. Waiting that long is going to be really annoying, and the 4 mana and one card spend for nothing may cost you the game.
Just looking at the stats, I think the card is actually decent, but I don't like it anyway, as it will create feel-bad moments. In any case it's much worse than Disk.
Even if I would be looking for an answer to planeswalkers, this card would not make me happy.
Fwiw, I might run this card:
Boompile with three fuses 4
Artifact (R)
T: Flip a coin. If you win the flip, destroy all nonland permanents. If you lose the flip, put a fuse counter on it. When there are three fuse counters on ~, destroy all nonland permanents.
That would be much better than the printed card, and still worse than Disk.
If I really needed a colorless way to wipe out everything including planeswalkers, I'd play Perilous Vault or O-Stone. A mechanic that has me flipping coins to decide whether an effect even happens would have to have some pretty amazing expected value.
I actually like Boompile more than O-Stone / Perilous Vault since they come up to a total of 8-9 mana to blow up the world. I can understand not liking coin flips, but the other effects cost at least double the mana you invest for Boompile. Boompile's main selling point to me is that it's both cheaper and faster than Disk.
Disk > Boompile > O-Stone > Perilous Vault is how I'd rank these effects.
This card sure is a pile of something....
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Yup. The best argument for still including Disk is the ability to deckbuild the effect into asymmetry.
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On average it goes off one turn after playing it (like Disk), but in more than 1/10 of the games it takes three attempts to go boom, and in more than 1/20 it even takes four attempts. Waiting that long is going to be really annoying, and the 4 mana and one card spend for nothing may cost you the game.
Just looking at the stats, I think the card is actually decent, but I don't like it anyway, as it will create feel-bad moments. In any case it's much worse than Disk.
Why not use both?
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Fwiw, I might run this card:
Boompile with three fuses 4
Artifact (R)
T: Flip a coin. If you win the flip, destroy all nonland permanents. If you lose the flip, put a fuse counter on it. When there are three fuse counters on ~, destroy all nonland permanents.
That would be much better than the printed card, and still worse than Disk.
Disk > Boompile > O-Stone > Perilous Vault is how I'd rank these effects.
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