Ichor Synthesizer is a common Creature — Phyrexian Wizard card from Phyrexia: All Will Be One (ONE), collector number 55. Current market price: $0.14 (foil $0.25), TCGplayer market prices via Scryfall.
Whenever you cast a noncreature spell, put an oil counter on this creature. As long as this creature has four or more oil counters on it, it gets +2/+0 and can't be blocked.