Ghalta, Stampede Tyrant [The Lost Caverns of Ixalan] BT11-018 where X is the number

where X is the number of creatures that died under your control this turn

Why would it need a cooling unit

Return an unblocked attacking Rogue you control to its owner's hand: Put Zareth San

Set: World Championship Decks 2001 Type: Instant — Rarity: Rare Cost: {3}{R} Choose a card type

Ghalta, Stampede Tyrant [The Lost Caverns of Ixalan] BT11-018 where X is the numberSet: The Lost Caverns of Ixalan Type: Legendary Creature Elder Dinosaur Rarity: Mythic Cost: {5}{G}{G}{G} Trample When Ghalta, Stampede Tyrant enters the battlefield, put any number of creature cards from your hand onto the battlefield. A thundering roar calls forth a primeval army.