Mirrodin Besieged

As an additional cost to cast this spell, sacrifice a creature. Draw three cards.

Put a -1/-1 counter on target creature. When that creature dies this turn, its controller gets a poison counter.

When this creature dies, you may search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Target creature gets +1/+1 and gains trample until end of turn.

Creatures your opponents control get -2/-0 until end of turn.

This creature can't attack or block unless it's equipped.

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

Trample

{2}{G}: Regenerate this creature.

Choose one — • Counter target artifact spell. • Return target artifact to its owner's hand.

Destroy target creature, then proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already the...

Defender Metalcraft — As long as you control three or more artifacts, this creature gets +2/+2 and can attack as though it didn't have defender.

{R}: Target creature can't block this creature this turn.

This artifact enters with three charge counters on it. {T}, Remove a charge counter from this artifact: Target player mills two cards.

Flying When this creature dies, each player discards a card.

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

Sacrifice an artifact: Regenerate this creature.

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

Metalcraft — This creature gets +2/+2 as long as you control three or more artifacts.

Attacking creatures get +1/+0 and gain first strike until end of turn.

Return up to two target nonland permanents to their owners' hands.

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

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

When this creature enters, you draw a card and you lose 1 life.