Lickilicky Explosion vs. -6 0 HP / 0- Def Sunkern on a critical hit: 67707-79656 (39827.64 - 46856.47%) -- guaranteed OHKO
If we made Sunkern lv 1 though :P
Lickilicky Explosion vs. -6 0 HP / 0- Def Sunkern on a critical hit: 947839-1115106 (8616718.18 - 10137327.27%) -- guaranteed OHKO
I did these calculations assuming you meant atk evs ect because that is what Explosion uses :P