Master Splicer is a uncommon Creature — Phyrexian Human Artificer card from Core Set 2020 (M20), collector number 29. Current market price: $0.18 (foil $0.40), TCGplayer market prices via Scryfall.
When this creature enters, create a 3/3 colorless Phyrexian Golem artifact creature token. Golems you control get +1/+1.