Arni Metalbrow (MAT 200)

Legendary Creature — Human Berserker • Mana cost: {2}{R} • March of the Machine: The Aftermath • Rare

Whenever a creature you control attacks or enters attacking, you may pay {1}{R}. If you do, you may put a creature card with mana value less than that creature's mana value from your hand onto the battlefield tapped and attacking.

Illustrated by Richard Luong.