That also happens with Nightglow, it is quite the interesting property and i haven't seen it on anyone else's attacks :P
"Swirling bolts, gather and strike with power! Bolt2!"
Cool as Shiva
@ahkenderson: YEah I notice that too. you can also receive the HP hit of GR even when you're elevated slightly from golbez. Kinda good thing to know. But the weird thing is, Zidane's tempest goes through this and he does not receive Hp damage. Kinda weird. Maybe the instant Hp hit happens when you hit with an HP attack. But I might be wrong with this. Just guessing...