This is a sheet I whipped up a few years ago for creating powers by hand, on paper. It's based on a similar sheet for creating spells in Fantasy Hero 1st edition. It includes columns for name and base Power, base cost, Advantages, Active Cost, END Cost, Limitations, Real Cost, and Skill Roll penalty. You can attach copies of this to your character sheet, and on the character sheet you can write the cost, name, basic effect, END cost, and a note to refer to the sheet. Something like "12 Lighting Bolt: 8d6 Blast, 4 END; see attached sheet"