Kozilek's Return (Prerelease) [Oath of the Gatewatch Prerelease Promos] Sliver

Kozilek's Return (Prerelease) [Oath of the Gatewatch Prerelease Promos] SliverSet: Oath of the Gatewatch Prerelease Promos Type: Instant Rarity: Mythic Cost: {2}{R} Devoid (This card has no color.) Kozilek's Return deals 2 damage to each creature. Whenever you cast an Eldrazi creature spell with converted mana cost 7 or greater, you may exile Kozilek's Return from your graveyard. If you do, Kozilek's Return deals 5 damage to each creature.

The Battle of Tomakul taught Urza not to rely on fickle reinforcements

exile all Sand Warriors

you gain 3 life and you may return up to one target creature card from your graveyard to your hand

Set: Time Spiral Timeshifted Type: Creature — Zombie Rarity: Rare Cost: {2}{B}{B} Zombie spells you cast cost {1} less to cast

Then look at the exiled cards and put them on top of your library in any order

Set: New Phyrexia Type: Legendary Creature — Praetor Rarity: Mythic Cost: {5}{B}{B} Swampwalk (This creature can't be blocked as long as defending player controls a Swamp

Heretical Healer

Sacrifice a creature: Add {B}{B}

Dragons come not in packs or in herds but in storms

Set: Unlimited Edition Type: Enchantment — Aura Rarity: Uncommon Cost: {1}{B} Enchant creature card in a graveyard

{W}: Enchanted creature gets +1/+1 until end of turn

Set: Urza's Destiny Type: Artifact Creature — Construct Rarity: Rare Cost: {3} {T}: Reveal any number of artifact cards in your hand