The Many Deeds of Belzenlok is a rare Enchantment — Saga card from Mystery Booster 2 (MB2), collector number 550. Current market price: $0.18, TCGplayer market prices via Scryfall.
I — Exile up to one target Saga card from a graveyard. Copy its chapter I ability. II — Exile up to one target Saga card from a graveyard. Copy its chapter II ability. III — Exile up to one target Saga card from a graveyard. Copy its chapter III ability.