Hatchery Sliver is a rare Creature — Sliver card from Commander Masters (CMM), collector number 771. Current market price: $10.83 (foil $15.48), TCGplayer market prices via Scryfall.
Replicate {1}{G} (When you cast this spell, copy it for each time you paid its replicate cost.) Each Sliver spell you cast has replicate. The replicate cost is equal to its mana cost. (A copy of a permanent spell becomes a token.)