Trick+or+treat

You lost but you hear the sound of angels but you are wrong a lamia, leviathan and kraken surround you saying "hummmm, You survived quite long we praise you for that, here call me any tiome you like." you got a laviathan+++ charm which you can use once per fight to destroy 50 def of your opponent. "To your left you will find a skill teacher go there and call me to prove your honour. To your right there is a power vassel which will allow you to eliminate your opponent instantly but can be used only once but there will be more in your journey. So now choose your path as once you go there's no turning back" Do you go right Do you go left