Accumulation Bolt

Accumulation bolt [minor] by Iczer

'It starts out weak, but you should see it build a head of steam'

The character can fire a bio-energy blast (or an energy type of his own choosing) for 4D6 damage, with +2 to strike out to a range of 120 feet. This blast requires one action to perform.
If his next immediate action is to fire again, the damage increases by a dice. This continues until he reaches a whopping 20 dice or has to stop to perform another action.
The blasts pack additional punch as well. After the first melee round, each blast ignores 2 AR of targets, with an additional -2 to an opponent's AR every subsequent melee round.
Each subsequent blast also adds 30 feet to the range.