Obeka, Splitter of Seconds is a rare Legendary Creature — Ogre Warlock card from Outlaws of Thunder Junction (OTJ), collector number 358. Current market price: $1.82 (foil $3.55), TCGplayer market prices via Scryfall.
Menace Whenever Obeka deals combat damage to a player, you get that many additional upkeep steps after this phase.