Krang, Master Mind is a rare Legendary Artifact Creature — Utrom Warrior card from Teenage Mutant Ninja Turtles (TMT), collector number 230. Current market price: $1.46 (foil $1.59), TCGplayer market prices via Scryfall.
Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.) When Krang enters, if you have fewer than four cards in hand, draw cards equal to the difference. Krang gets +1/+0 for each other artifact you control.