Pump Ability

Permanents that pump on demand: pay a cost and a creature, or your whole team, gets bigger until end of turn. Wildheart Invoker turns eight mana into +5/+5 and trample, Wyluli Wolf and Stern Marshal pump one creature for a mana, Swarm Guildmage and Slayers' Stronghold pump on a bigger cost, and planeswalkers like Ajani Goldmane do it from loyalty. On-board pumps make combat math a mana question for the opponent every turn. Distinct from Combat Trick, the instant-speed surprise from hand, from Power Booster, the static bonus of Equipment and Auras, and from Mana Sink, which needs an X cost that scales without bound.