[quote=@Double]
Oh, and in case it hasn't been explained, for the purposes of our rule set, Taiyoken/Solar Flare applies a debuff to enemy Speed equal to the amount of Ki spent on using it.
[/quote]

I think you said that wrong. It's not equal to the Ki spent on it. Technically, if you spend [b]20[/b] ki on it, on a person that's never seen it before, it would reduce their speed by 50 ([b]20[/b] x 2.5). 

But I'm sure that is what you meant.