The Book of Gideon Jura, Combat Mage

[Anitar]

Originally Posted by Dysole

Until we get something that blocks powers that use clear sight or has the ability to negate powers.

~Dysole, finding the idea amusing as well

Or if he's attacking an ally, or an adjacent figure he can't see (which admittedly doesn't seem possible given the current dearth of terrain, but it's definitely possible with an HS battlefield).