Mirrodin Besieged

Return up to two target creature cards from your graveyard to your hand.

Flying Whenever you cast an artifact spell, you may untap target creature.

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.

Create two 1/1 colorless Myr artifact creature tokens.

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

Flying

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

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

({T}: Add {U}.)

({T}: Add {U}.)

When this artifact enters or is put into a graveyard from the battlefield, draw a card.

Target player discards a card, then mills a card.

{U}: This creature gains flying until end of turn.

Sacrifice an artifact: This creature gains trample until end of turn.

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

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

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

({T}: Add {G}.)

({T}: Add {G}.)

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...

Living weapon (When this Equipment enters, create a 0/0 black Phyrexian Germ creature token, then attach this to it.) Equipped creature gets +1/+1....

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

{2}{B}: This creature gets +1/+1 until end of turn.