Sneak Attack [Double Masters] Mirage Primordial Hydra has trample as

Primordial Hydra has trample as long as it has ten or more +1/+1 counters on it

Set: Dissension Type: Creature — Human Wizard Mutant Rare Cost: {2}{U}{U} Graft 2 (This creature enters the battlefield with two +1/+1 counters on it

Set: Mystery Booster Type: Artifact Rarity: Uncommon Cost: {4} Whenever an opponent discards a card

Then exile the top card of your library

Sneak Attack [Double Masters] Mirage Primordial Hydra has trample asSet: Double Masters Type: Enchantment Mythic Cost: {3}{R} {R}: You may put a creature card from your hand onto the battlefield. That creature gains haste. Sacrifice the creature at the beginning of the next end step.