Sliver Hivelord [Mystery Booster] Hellion Hydra Revolt — At the beginning

Revolt — At the beginning of your end step

Set: Mystery Booster Playtest Cards Type: Creature — Troll Shaman Rarity: Rare Cost: {3}{R} All targeted spells and abilities cost {2} less and have their targets chosen randomly

Set: Future Sight Type: Instant Rarity: Rare Cost: {U} Counter target spell if no mana was spent to cast it

Even bigger

When Demanding Dragon enters the battlefield

Sliver Hivelord [Mystery Booster] Hellion Hydra Revolt — At the beginningSet: Mystery Booster Type: Legendary Creature Sliver Rarity: Mythic Cost: {W}{U}{B}{R}{G} Sliver creatures you control have indestructible. (Damage and effects that say "destroy" don't destroy them.) "This is the source, the line unbroken since the calamity that brought such monsters to our shores." Hastric, Thunian scout