Make Detonate instant.

[Aquillion]

This talent seems a bit underused. And you already spent a turn summoning the monster; another turn to detonate it seems annoying.

Alternatively... the detonation hurts other summons, which is a problem for this class. Perhaps it shouldn't hurt you or your summons (or maybe gain that feature at higher talent levels.)

[bricks]

Passive chance to detonate on dying would be cool, so long as the attack doesn't hurt you/your summons.