Mindspring Merfolk is a rare Creature — Merfolk Wizard card from Aetherdrift (DFT), collector number 51. Current market price: $0.38 (foil $0.42), TCGplayer market prices via Scryfall.
Exhaust — {X}{U}{U}, {T}: Draw X cards. Put a +1/+1 counter on each Merfolk creature you control. (Activate each exhaust ability only once.)