Cauldron Haze is a uncommon Instant card from Eventide (EVE), collector number 84. Current market price: $5.59 (foil $0.30), TCGplayer market prices via Scryfall.
Choose any number of target creatures. Each of those creatures gains persist until end of turn. (When it dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)