Master Splicer is a uncommon Creature — Phyrexian Human Artificer card from Modern Masters 2017 (MM3), collector number 15. Current market price: $0.30 (foil $0.48), 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.