Mirrodin Besieged

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

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

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

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

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

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

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

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

Vigilance This creature can block an additional creature each combat for each Equipment attached to this creature.

When this creature enters, you may exile target artifact or enchantment. When this creature leaves the battlefield, return the exiled card to the b...

Flying

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

Create two 1/1 colorless Myr artifact creature tokens.

Double strike, protection from black and from green

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 all creatures, then create an X/X colorless Phyrexian Horror artifact creature token, where X is the number of creatures destroyed this way.

Flying 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 this creature attacks, attacking creatures gain flying and lifelink until end of turn.

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