Fertile Imagination is a uncommon Sorcery card from Dissension (DIS), collector number 84. Current market price: $0.38 (foil $0.70), TCGplayer market prices via Scryfall.
Choose a card type. Target opponent reveals their hand. Create two 1/1 green Saproling creature tokens for each card of the chosen type revealed this way. (Artifact, battle, creature, enchantment, instant, kindred, land, planeswalker, and sorcery are card types.)