All power demands sacrifice and pain. The universe rewards those willing to spill their life's blood for the promise of power.
Sindri, Alpha Legion Sorcerer, Warhammer 40,000
GG: Whoa. That's neat. I wish I could do that.
Erik: Don't you have the ability to say you have that power then makes it so you have that power or something?
GG: Well not exactly. I can only do that when I'm not exactly doing it on purpose. Because when I do it on purpose, I'll have to pay the price. And I really don't like paying the price.
Erik: Oh... Can I ask what the price is?
GG: Blood and/or physical health. The amount of price is always related to the impact of what I change. But the exchange rate is horrible. Remember when I said I lost the bones from my right hand? That happened after I changed Asagi back into a human. It's always very- Oh, you know what? Let me just show you.
(GG looks at Erik for a moment)
GG: You are orange.
(Erik's green features turn orange and a large cut appears on GG's left Cheek, he bleeds Rainbow-colored blood)
GG: See? I just changed your color and what I got is a nasty cut.
"So much blood, waiting for purpose."
—Blood Lord Vladimir, The Crimson Reaper, League of Legends