6v6 singles battle.
My Forretress uses Stealth Rocks and Spikes (once), then faints.
I send my Riolu with he Prankster ability and Roar.
If the conditions of the battle are:
Pokemon would receive normal damage from Stealth Rocks and Spikes
No Priority-Moves (Making Roar always go first)
No Pranksters (only Riolu)
No weather effects such Sandstorm, making Riolu get damage
Roar has 32 PP (Max.) and the question is, if I use all 32 Roars, can I win the battle?