Blink in to any full faction BG or split that can't have Blink. Mason spire a champ away for 12 rounds, create a chasm under the spot, stop almost any condition or equipment, heal your fattest tank to full hp, etc, etc -- most versatile spell in the game.
I'm not sure if you are aware that blink got nerfed. No one runs it anymore. Chasum is no loger possible. FYI.