Quoted By:
Arboliva can solo it no problem
Sunny Day first turn to clear rain
Gigadrain till terastalize
once tera form, stack some Growth.
if you get low Gigadrain, even if your special attack is not yet buffed it will heal you almost fully, repeat till it dies.
its probably far from the cleanest way to beat it, but it works if you wana get the rat and be done with it.
I forgot to equip an item so lmao use literally whatever, leftovers for extra bulks seems about right