Sung Jin-woo

when this creature kills another creature you don't control you level up. every two levels this creature gets a +1+1 counter

when you reach level 5 you get a emblem that says on your upkeep you create a 1/1 black knight creature token with indestructible

when you reach level 10 you create a 7/7 black knight leader creature token with indestructible,vigilance, trample