Cooker

I had assumed it would be available since hidden abilities of the starters before v13 were available when you got them, but i may be wrong

I plan on picking rillaboom as grassy terrain will be super powerful in a game where the arena makes such a difference

I believe the 2nd hit of the attack was going to kill them with a crit.

I was battling the girl in the top left of the stands and after getting 2 crits from range with star an error message appeared. Attached a screenshot of the error message I received.