Flying Whenever you gain life, target opponent loses that much life.

Whenever you gain life, target opponent loses that much life.

Flying, vigilance, deathtouch, lifelink At the beginning of your end step, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

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

You draw two cards and you lose 2 life. Each opponent gets a poison counter.

{T}: Add one mana of any color in your commander's color identity. Sacrifice this artifact: Draw a card.

This artifact enters tapped. When this artifact enters, proliferate. {T}: Add one mana of any color. Corrupted — {T}: Add three mana of any one color. Activate only if an opponent has three or more poison counters.

{4}, {T}: Target opponent loses 2 life, gets a poison counter, then mills six cards.

Toxic 2 (Players dealt combat damage by this creature also get two poison counters.) Whenever a creature you control with toxic deals combat damage to a player, that player gets an additional poison counter. {1}{B}{G}: Target creature you control with toxic gains deathtouch until end of turn.

Creatures you control get +2/+2 until end of turn. Whenever a creature blocks this turn, its controller gets a poison counter.

{4}, {T}: Create a 1/1 colorless Snake artifact creature token. It has "Whenever this creature deals damage to a player, that player gets a poison counter." (A player with ten or more poison counters loses the game.)

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.) At the beginning of your upkeep, return target creature card from your graveyard to the battlefield. At the beginning of each opponent's upkeep, that player sacrifices a creature of their choice.

Target creature you control deals damage equal to its power to target creature you don't control. Each opponent gets a poison counter.

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 has.

Trample Whenever a source deals damage to this creature, that source's controller sacrifices that many permanents of their choice.

Destroy target creature with flying. Its controller gets a poison counter.

Flying Spear of the Void Dragon — Whenever this creature attacks, each opponent sacrifices a nonland permanent of their choice. Matter Absorption — Whenever an artifact is put into a graveyard from the battlefield or is put into exile from the battlefield, put two +1/+1 counters on this creature.

Flying {2}, {Q}: Add one mana of any color. ({Q} is the untap symbol.)