ROOM is a 1-cost Yellow event from Royal Blood (OP10-117), C rarity. Tracked TCGPlayer market price: $0.16 as of 2026-06-18. Power 3000. Effect: [Counter] If you have 1 or less Life cards, up to 1 of your Leader or Character cards gains +3000 power during this battle. Then, set up to 1 of your Characters with a cost of 5 or less as active. [Trigger] Draw 1 card. Supernovas/Heart Pirates