Form of the Dinosaur (Prerelease) [Rivals of Ixalan Prerelease Promos] Colorless Whenever an opponent casts a

Whenever an opponent casts a blue or black spell during your turn

Counter up to one target creature spell if {U} was spent to cast this spell

"A hedron holds magic for a thousand years—or less

Set: Modern Masters Type: Creature — Shapeshifter Rarity: Common Cost: {U} Changeling (This card is every creature type

{T}: If the top card of target player's graveyard is a creature card

Form of the Dinosaur (Prerelease) [Rivals of Ixalan Prerelease Promos] Colorless Whenever an opponent casts aSet: Rivals of Ixalan Prerelease Promos Type: Enchantment Rarity: Rare Cost: {4}{R}{R} When Form of the Dinosaur enters the battlefield, your life total becomes 15. At the beginning of your upkeep, Form of the Dinosaur deals 15 damage to target creature an opponent controls and that creature deals damage equal to its power to you.