Mirrodin Besieged

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

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

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.

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

Metalcraft — Ardent Recruit gets +2/+2 as long as you control three or more artifacts.

Vigilance Kemba's Legion can block an additional creature each combat for each Equipment attached to Kemba's Legion.

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

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

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

Flying Whenever Victory's Herald attacks, attacking creatures gain flying and lifelink until end of turn.

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

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