Which ability do you think is the best?

Wave increases range by 200 per level and deals 100% damage to wave characters per hit, which is good because it hits enemies too. For each level, Inferno deals 100% damage to Inferno characters with one attack from a single spot. It's a broken ability, but unfortunately, there are quite a few enemies with Inferno immunity and reflection, which is unfair. Explosion has three types: the first deals 100% damage, the second deals reduced damage at 70%, and the last deals even smaller explosions with damage reduced to 40%. It hasn't been released for very long, so there aren't many enemies with explosion immunity, which is good. I think Wave is the best. It's very helpful for clearing mobs.