Haste
Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)
: Regenerate Blight Mamba.
Blighted Agent is unblockable.
Trample, infect
Blightsteel Colossus is indestructible.
If Blightsteel Colossus would be put into a graveyard from anywhere, reveal Blightsteel Colossus and shuffle it into its owner's library instead.
Reach (This creature can block creatures with flying.)
Burn the Impure deals 3 damage to target creature. If that creature has infect, Burn the Impure deals 3 damage to that creature's controller.
Put two 1/1 green Insect creature tokens with infect onto the battlefield. (They deal damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)
Chained Throatseeker can't attack unless defending player is poisoned.
When Core Prowler dies, proliferate. (You choose any number of permanents and/or players with counters on them, then give each another counter of a kind already there.)
When Corpse Cur enters the battlefield, you may return target creature card with infect from your graveyard to your hand.
Enchant creature
You control enchanted creature.
Enchanted creature has infect. (It deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)
Whenever Diseased Vermin deals combat damage to a player, put an infection counter on it.
At the beginning of your upkeep, Diseased Vermin deals X damage to target opponent previously dealt damage by it, where X is the number of infection counters on it.
, : Fallen Ferromancer deals 1 damage to target creature or player.
At the beginning of your upkeep, you may put an infection counter on Festering Wound.
At the beginning of the upkeep of enchanted creature's controller, Festering Wound deals X damage to that player, where X is the number of infection counters on Festering Wound.
Lifelink (Damage dealt by this creature also causes you to gain that much life.)
Flying
Sacrifice a creature: Flesh-Eater Imp gets +1/+1 until end of turn.
Enchanted creature has infect.
At the beginning of your upkeep, put a -1/-1 counter on enchanted creature.
When Glistening Oil is put into a graveyard from the battlefield, return Glistening Oil to its owner's hand.
Equipped creature gets +2/+2 and has infect. (It deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)
Whenever Grafted Exoskeleton becomes unattached from a permanent, sacrifice that permanent.
Equip
Other creatures you control with infect get +1/+1.
Whenever you cast a creature spell with infect, target player gets a poison counter.
When Ichor Rats enters the battlefield, each player gets a poison counter.
Whenever Ichorclaw Myr becomes blocked, it gets +2/+2 until end of turn.
: Infected Vermin deals 1 damage to each creature and each player.
Threshold — : Infected Vermin deals 3 damage to each creature and each player. Activate this ability only if seven or more cards are in your graveyard.