Master Splicer is a uncommon Creature — Phyrexian Human Artificer card from Double Masters (2XM), collector number 22. Current market price: $0.26 (foil $0.19), 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.