Hidden Dragonslayer (Prerelease) [Dragons of Tarkir Prerelease Promos] Locus create a 0/1 colorless Eldrazi

create a 0/1 colorless Eldrazi Spawn creature token

Set: Time Spiral Type: Enchantment — Aura Rarity: Uncommon Cost: {4}{U} Enchant creature

return it to the battlefield under your control and put a death counter on it

Battalion — Whenever Firemane Avenger and at least two other creatures attack

If a source would deal damage to Swans of Bryn Argoll

Hidden Dragonslayer (Prerelease) [Dragons of Tarkir Prerelease Promos] Locus create a 0/1 colorless EldraziSet: Dragons of Tarkir Prerelease Promos Type: Creature Human Warrior Rarity: Rare Cost: {1}{W} Lifelink Megamorph {2}{W} (You may cast this card face down as a 2 2 creature for {3}. Turn it face up any time for its megamorph cost and put a +1 +1 counter on it.) When Hidden Dragonslayer is turned face up, destroy target creature with power 4 or greater an opponent controls.