Arcane Adaptation [Ixalan Prerelease Promos] Cyborg Advisor Boorish Herder enters the battlefield

Boorish Herder enters the battlefield or attacks

counter that spell if it has the same mana value as the revealed card

you may have Valakut

Set: Commander 2017 Type: Legendary Artifact — Equipment Rarity: Rare Cost: {2} Equipped creature gets +1/+1

Set: Rise of the Eldrazi Type: Creature — Human Cleric Rarity: Common Cost: {W} Whenever another creature enters the battlefield

Arcane Adaptation [Ixalan Prerelease Promos] Cyborg Advisor Boorish Herder enters the battlefieldSet: Ixalan Prerelease Promos Type: Enchantment Rarity: Rare Cost: {2}{U} As Arcane Adaptation enters the battlefield, choose a creature type. Creatures you control are the chosen type in addition to their other types. The same is true for creature spells you control and creature cards you own that aren't on the battlefield.