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Each opponent gets a poison counter. Then each creature your opponents control gets -1/-1 until end of turn for each poison counter its controller ...

Destroy each nonland permanent with mana value 2 or less. Add {B} or {G} for each permanent destroyed this way.

Choose one — • Boros Charm deals 4 damage to target player or planeswalker. • Permanents you control gain indestructible until end of turn. • Targe...

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.) When Viridian Corrupt...

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.) At the beginning of y...

({G/P} can be paid with either {G} or 2 life.) Put target card from a graveyard on top of its owner's library.

Return up to one target creature card from your graveyard to the battlefield. Corrupted — For each opponent who has three or more poison counters ...

Mycosynth Fiend gets +1/+1 for each poison counter your opponents have.

Landfall — Whenever a land enters the battlefield under your control, proliferate. (Choose any number of permanents and/or players, then give each ...

Search your library for up to two basic land cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuf...

Create two 1/1 green Phyrexian Insect creature tokens with infect. (They deal damage to creatures in the form of -1/-1 counters and to players in t...

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.) {1}{G}: Regenerate Bl...

Choose up to two target creatures you don't control. For each of those creatures, create a token that's a copy of that creature. Those tokens gain ...

At the beginning of your upkeep, if you control six or more lands, create a 5/5 red Dragon creature token with flying.

Chain Reaction deals X damage to each creature, where X is the number of creatures on the battlefield.

Flying Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

Converge — You draw X cards and you lose X life, where X is the number of colors of mana spent to cast this spell.

You draw two cards and you lose 2 life.

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.) When Ichor Rats enter...

Target player draws three cards, loses 3 life, and gets three poison counters.

Flying Creatures can't attack you unless their controller pays {2} for each creature they control that's attacking you.

Flying