Walking Ballista [Aether Revolt] Urza's Saga Set: Worldwake Prerelease Promos Type:

Set: Worldwake Prerelease Promos Type: Creature — Vampire Shaman Rarity: Rare Cost: {B}{B} Whenever Kalastria Highborn or another Vampire you control dies

where X is the number of creatures that died this way

exile Kytheon

Untap all creatures you control

No pilgrimage to Valor's Reach is complete without a stroll through its celebrated shopping district

Walking Ballista [Aether Revolt] Urza's Saga Set: Worldwake Prerelease Promos Type:Set: Aether Revolt 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.