Random Finisher / Level Up Effect

Some of the finishers and level up effects look great, however they're the kind of thing where the novelty wears off quickly after seeing the same one repeated over and over again. Having an option to use a random finisher effect / level up effect would go a long way to reducing that.

It honestly seems like an oversight that there's no random option here whereas there's a random option for portals. It just doesn't seem to make as much sense for portals, but maybe that's just me.