Karn, Legacy Reforged - March of the Machine: The Aftermath - 99

Legendary Artifact Creature — Golem

Mana Cost: {5}

Karn's power and toughness are each equal to the greatest mana value among artifacts you control.
At the beginning of your upkeep, add {C} for each artifact you control. This mana can't be spent to cast nonartifact spells. Until end of turn, you don't lose this mana as steps and phases end.

P/T: */*

Mythic · March of the Machine: The Aftermath · #99 (MAT)

Illustrated by Daren Bader