Shimatsu the Bloodcloaked is a rare Legendary Creature — Demon Spirit card from Champions of Kamigawa (CHK), collector number 186. Current market price: $0.17 (foil $1.10), TCGplayer market prices via Scryfall.
As Shimatsu enters, sacrifice any number of permanents. Shimatsu enters with that many +1/+1 counters on it.