Killer is a 3-cost Yellow character from Royal Blood (OP10-106), C rarity. Tracked TCGPlayer market price: $0.07 as of 2026-06-18. Power 5000. Effect: [On K.O.] If your Leader has the {Supernovas} type, look at 3 cards from the top of your deck; reveal up to 1 {Supernovas} or {Kid Pirates} type card and add it to your hand. Then, place the rest at the bottom of your deck in any order. Supernovas/Kid Pirates Illustrated by tasaka