I actually don't worry about the spammable, but let say, the first thing that come to my mind is seeing a cleric or someone just resurrected his/her friend in the middle of a fight, and then a Chronomancer nearby just goes "Lol nope" and turn back time.
Hilarity ensures, along with raging. You know when I get my hand on a Chronomancer, that will be the first thing I do to my friends.