Mirrodin Besieged

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

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

When Kuldotha Flamefiend enters the battlefield, you may sacrifice an artifact. If you do, Kuldotha Flamefiend deals 4 damage divided as you choose...

Flying, haste {1}{R}: Hellkite Igniter gets +X/+0 until end of turn, where X is the number of artifacts you control.

Sacrifice an artifact: Gnathosaur gains trample until end of turn.

When Blisterstick Shaman enters the battlefield, it deals 1 damage to any target.

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

When Phyrexian Rager enters the battlefield, you draw a card and you lose 1 life.

Whenever a source deals damage to Nested Ghoul, create a 2/2 black Zombie creature token.

When Caustic Hound dies, each player loses 4 life.

At the beginning of your upkeep, you may put a charge counter on target artifact.

{2}{U}, {T}: Put a -1/-1 counter on target creature. You may tap or untap that creature.

When Treasure Mage enters the battlefield, you may search your library for an artifact card with converted mana cost 6 or greater, reveal it, put i...

When Oculus dies, you may draw a card.

Shroud (This creature can't be the target of spells or abilities.) Whenever Neurok Commando deals combat damage to a player, you may draw a card.

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

Training Drone can't attack or block unless it's equipped.

{2}{G}: Regenerate Tangle Hulk.

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

Metalcraft — Razorfield Rhino gets +2/+2 as long as you control three or more artifacts.

When Pierce Strider enters the battlefield, target opponent loses 3 life.

When Peace Strider enters the battlefield, you gain 3 life.

Flying