Rohgahh of Kher Keep is a rare Legendary Creature — Kobold card from Legends (LEG), collector number 255. Current market price: $39.59, TCGplayer market prices via Scryfall.
At the beginning of your upkeep, you may pay {R}{R}{R}. If you don't, tap Rohgahh and all creatures named Kobolds of Kher Keep, then an opponent gains control of them. Creatures you control named Kobolds of Kher Keep get +2/+2.