Mirrodin Besieged

Destroy target artifact. You gain life equal to its mana value.

Create X 2/2 white Cat creature tokens. Shuffle White Sun's Zenith into its owner's library.

Target player draws X cards. Shuffle Blue Sun's Zenith into its owner's library.

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

Destroy target nonartifact creature.

Destroy target noncreature artifact.

Put any number of target artifact cards from your graveyard on top of your library. Draw a card.

Create two 1/1 colorless Myr artifact creature tokens.

Target creature gets +2/+2 until end of turn. Metalcraft — That creature gets +4/+4 until end of turn instead if you control three or more artifacts.

Counter target spell, then proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

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

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

Exile two target artifacts.

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 a -1/-1 counter on each attacking creature.

Put target artifact, creature, or enchantment on top of its owner's library.