Boom Scholar

Exhaust abilities of other permanents you control cost {2} less to activate. Exhaust — {4}{R}{G}: Creatures and Vehicles you control gain trample until end of turn. Put two +1/+1 counters on this creature. (Activate each exhaust ability only once.)

From Magic: The Gathering.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6opr1wixw1pb1h4o6vljux.