Walking Ballista enters with X +1/+1 counters on it.: Put a +1/+1 counter on Walking Ballista.Remove a +1/+1 counter from Walking Ballista: It deals 1 damage to any target.
: Target artifact creature's controller sacrifices it. That player may search their library for a noncreature artifact card, put it onto the battlefield, then shuffle.
: You may put a creature card from your hand onto the battlefield. That creature gains haste. Sacrifice the creature at the beginning of the next end step.
Equipped creature gets +2/+2 and has protection from red and from white.Whenever equipped creature deals combat damage to a player, Sword of War and Peace deals damage to that player equal to the number of cards in their hand and you gain 1 life for each card in your hand.Equip
Living weapon (When this Equipment enters, create a 0/0 black Phyrexian Germ creature token, then attach this to it.)Equipped creature gets +4/+4 and has vigilance and lifelink.: Return Batterskull to its owner's hand.Equip
As an additional cost to cast this spell, sacrifice an artifact.Search your library for an artifact card with mana value X or less, put it onto the battlefield, then shuffle.
Creatures with power less than Champion of Lambholt's power can't block creatures you control.Whenever another creature you control enters, put a +1/+1 counter on Champion of Lambholt.
: You may put a creature card from your hand onto the battlefield. That creature gains haste. Sacrifice the creature at the beginning of the next end step.
FlyingWhenever Kaalia of the Vast attacks an opponent, you may put an Angel, Demon, or Dragon creature card from your hand onto the battlefield tapped and attacking that opponent.
FlyingInfect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.): Skithiryx, the Blight Dragon gains haste until end of turn.: Regenerate Skithiryx.