Look more closely at the write-up. Ultra Power merely provides rules for pulling power stunts with your other powers, it grants no powers by itself. For example, if you've got super speed, you can use Ultra Power to try to disarm fifty bombs in one second even if a strict reading of the power indicates that such a task would be impossible.
The easiest way to model Doug's primary power is with Modular Abilities (cosmic power), although the sheer cost of it (even with modifiers) would be absurd. Also, the huge number of modifiers necessary would make Modular Abilities an awkward fit.
A cheaper way to model Doug's primary power is through repeated applications of the Alternate Form power. He can buy his most expensive power package at 90 percent of full price plus 3 points for the underlying Alternate Form (15 base minus 80% in modifiers: -10% magic, -40% once/day, -30% accessibility: only while power song is playing), and then buy additional Alternate Forms for a mere 3 points each. Given how cheap buying a new power song is using this method, Doug can easily crape together sufficient xp during adventures to pay the 3 points to manifest a new set of powers.
Additionally, if Doug does model his powers as Alternate Forms, he actually can use Ultra Power to dynamically pump them up. Perhaps that is the rule based explanation for what happens when he taps into a major external mana source to pump up the effects of an existing song (such as when he turned the shotgun from White Wedding into a pair of machineguns in the Bubblegum Crisis step).
----------------------------------------------------
"Anyone can be a winner if their definition of victory is flexible enough." - The DM of the Rings XXXV
The easiest way to model Doug's primary power is with Modular Abilities (cosmic power), although the sheer cost of it (even with modifiers) would be absurd. Also, the huge number of modifiers necessary would make Modular Abilities an awkward fit.
A cheaper way to model Doug's primary power is through repeated applications of the Alternate Form power. He can buy his most expensive power package at 90 percent of full price plus 3 points for the underlying Alternate Form (15 base minus 80% in modifiers: -10% magic, -40% once/day, -30% accessibility: only while power song is playing), and then buy additional Alternate Forms for a mere 3 points each. Given how cheap buying a new power song is using this method, Doug can easily crape together sufficient xp during adventures to pay the 3 points to manifest a new set of powers.
Additionally, if Doug does model his powers as Alternate Forms, he actually can use Ultra Power to dynamically pump them up. Perhaps that is the rule based explanation for what happens when he taps into a major external mana source to pump up the effects of an existing song (such as when he turned the shotgun from White Wedding into a pair of machineguns in the Bubblegum Crisis step).
----------------------------------------------------
"Anyone can be a winner if their definition of victory is flexible enough." - The DM of the Rings XXXV