Cataclysmic Gearhulk [Kaladesh Inventions] Goblin Warrior When Arena of the Ancients

When Arena of the Ancients enters the battlefield

"Here sprouted the first seedling of Argoth

Set: Limited Edition Alpha Type: Creature — Nightmare Horse Rarity: Rare Cost: {5}{B} Flying (This creature can't be blocked except by creatures with flying or reach

Sacrifice Crystal Vein: Add {C}{C}

Cataclysmic Gearhulk [Kaladesh Inventions] Goblin Warrior When Arena of the AncientsSet: Kaladesh Inventions Type: Artifact Creature Construct Rarity: Mythic Cost: {3}{W}{W} Vigilance When Cataclysmic Gearhulk enters the battlefield, each player chooses an artifact, a creature, an enchantment, and a planeswalker from among the nonland permanents they control, then sacrifices the rest.