Walking Ballista [Aether Revolt Prerelease Promos] Phyrexian Zombie Knight Set: Antiquities Type: Creature —

Set: Antiquities Type: Creature — Atog Rarity: Common Cost: {1}{R} Sacrifice an artifact: Atog gets +2/+2 until end of turn

Lord of the Vault

Set: Legends Type: World Enchantment Rarity: Rare Cost: {3}{B} Whenever a player casts a spell

Kruphix isn't a creature

Walking Ballista [Aether Revolt Prerelease Promos] Phyrexian Zombie Knight Set: Antiquities Type: Creature —Set: Aether Revolt Prerelease Promos Type: Artifact Creature Construct Rarity: Rare Cost: {X}{X} Walking Ballista enters the battlefield with X +1 +1 counters on it. {4}: Put a +1 +1 counter on Walking Ballista. Remove a +1 +1 counter from Walking Ballista: It deals 1 damage to any target.