Kosei, Penitent Warlord is a rare Legendary Creature — Ogre Samurai card from Neon Dynasty Commander (NEC), collector number 67. Current market price: $0.33, TCGplayer market prices via Scryfall.
As long as Kosei is enchanted, equipped, and has a counter on it, Kosei has "Whenever Kosei deals combat damage to an opponent, you draw that many cards and Kosei deals that much damage to each other opponent."