In a recent fight, used seal of fate on Trenloch - he left and died to poisons... I didn't lose the cooldown.

"This ability has a long reuse timer, although should the shaman's prediction
come true and the victim die while their fate is still sealed, it ends immediately."

Also when the cooldown runs out, the echo is wrong - says "You have survived etc etc" as if I'm the afflicted, not the caller.

This one was tricky, it needed to be converted to a timer and timers don't have an obvious way to remove them by spell type... but I worked it out.