Mirrodin Besieged

Whenever an artifact is put into a graveyard from the battlefield, you may gain 5 life.

Battle cry (Whenever this creature attacks, each other attacking creature gets +1/+0 until end of turn.) Kuldotha Ringleader attacks each combat if...

Sacrifice Gore Vassal: Put a -1/-1 counter on target creature. Then if that creature's toughness is 1 or greater, regenerate it.

When Kuldotha Flamefiend enters the battlefield, you may sacrifice an artifact. If you do, Kuldotha Flamefiend deals 4 damage divided as you choose...

Forestwalk (This creature can't be blocked as long as defending player controls a Forest.)

Haste Battle cry (Whenever this creature attacks, each other attacking creature gets +1/+0 until end of turn.) Whenever Hero of Oxid Ridge attack...

Flying, haste {1}{R}: Hellkite Igniter gets +X/+0 until end of turn, where X is the number of artifacts you control.

Battle cry (Whenever this creature attacks, each other attacking creature gets +1/+0 until end of turn.)

Sacrifice an artifact: Gnathosaur gains trample until end of turn.

At the beginning of your upkeep, you may look at the top card of your library. You may cast it without paying its mana cost if it's an instant or s...

When Blisterstick Shaman enters the battlefield, it deals 1 damage to any target.

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

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

Flying Whenever a creature an opponent controls dies, you may gain 3 life. Whenever an opponent discards a card, you may gain 3 life.

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...

When Phyrexian Rager enters the battlefield, you draw a card and you lose 1 life.

First strike, protection from red and from white Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in th...

When Massacre Wurm enters the battlefield, creatures your opponents control get -2/-2 until end of turn. Whenever a creature an opponent controls d...

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

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

When Caustic Hound dies, each player loses 4 life.

At the beginning of your upkeep, you may put a charge counter on target artifact.

{2}{U}, {T}: Put a -1/-1 counter on target creature. You may tap or untap that creature.

When Treasure Mage enters the battlefield, you may search your library for an artifact card with mana value 6 or greater, reveal it, put it into yo...