Generally, their magic doesn't ask for either; but I know that some shamans at the Altar have been experimenting with dragon's blood and other substances. A while back, they've made us drink some of the blood… I could have done without the experience to be honest.

[Being high on dragon's blood… being so confident that almost no reason will reach you… it's almost as bad as being high on Darkness.

And well… that other thing they used on Riku, while he had been captive of those rogue shamans… he really doesn't dwell on what that had done to him.]