What level for Reha Arena of Death?

[ivra]

I used a similar tactic. Since I did not have Gorguanas in my stack I used Ball of Lightning + Awaken Dragon + Ball of Lightning the first turn. Next turn I used Awaken Dragon + Ball of Lightning. This was very effective on Impossible stacks. If I fought dragons I used Ball of Lightning + Awaken Dragon + Fiery Phantoms. I played as a warrior and it is no problem to have more than 100 in Rage. I made sure my rage was maxed before taking on dragons.