I cast a Fiery Temper targeting Electrostatic Pummeler. My opponent then pays 6 Enery Counters so that Pummeler can be a 4/4 but I responded with triggering Dynavolt Tower dealing another 3 damage to Pummeler but he pays another 3 energy so that his Pummeler can be an 8/8. Is this correct? I think the way it works is that Pummeler will be 2/2 when my Dynavolt triggers and that will kill it. Or does Pummeler become an 8/8 and will only take 6 damage?
I think stack is like this
Fiery Temper -> Eloctrostatic Pummeler -> Pummeler Pays 6 Enery -> Dynavolt Tower -> Pummeler Pays 3 Energy