Power-up

Power-up
Keyword Ability
Type	Activated
Introduced	Marvel Super Heroes
Last used	Marvel Super Heroes
Reminder Text	Power-up [cost] (Activate each power-up ability only once. Reduce the cost by his mana cost if he entered this turn.)
Scryfall Statistics
cards

Power-up is a keyword ability that comes attached to activated abilities. It is introduced in Marvel Super Heroes, that represents superheroes using their full power.

Power-up abilities are the same as exhaust abilities, in that they can only be activated once; however, they have a unique mechanic of being discounted by the mana cost of the permanent they belong to (including color) if it is activated on the same turn that it entered. Taking design cues from the usage of exhaust, many power-up abilities use counters to help players remember that they've already been activated.

Examples

Example

Quicksilver, Brash Blur
Legendary Creature — Mutant Hero
1/1
If Quicksilver, Brash Blur is in your opening hand, you may begin the game with him on the battlefield.
Haste
Power-up — : Put a +1/+1 counter and a double strike counter on Quicksilver. (Activate each power-up ability only once. Reduce the cost by his mana cost if he entered this turn.)