Overcharge

Over charge [minor] by Iczer

'one chance left... must...try...harder..'

The character can push a super power beyond it's intended limits. By Overcharging a power, that power doubles its effective level for the span of a single action or melee (depending if the power has a duration of instant or not). After that one use, the character takes 1d6 damage for every level effective level, and then that power vanishes for 1 hour per level gained.
(Fyre realizes she has just one shot at Master Disaster's jet, so she throws everything into her EE: Fire. As a 6th level character, she has a one shot use of he EE: fire at 12th level. Later that day, she finds herself attempting to beat the master ninja warrior 'toshi'. She bumps her Natural combat ability to 12th level in the hopes of defeating the ninja in one round.)