How to mod Rex

Speed to go early, and often. This is true no matter what. The second mod priority is protection to keep him alive, or if you run him with Zarriss like I do, health instead. Potency if you use him against the Rancor, and want his TM reduction to stick. (Not necessary if used with TFP) Tenacity can be good in arena if you can get it REALLY high, and your opponents are not bothering to mod potency. And under Cody lead, then crit chance to help the cooldown on 212th attack.