Someone tested this awhile ago I believe. It doesn't bypass psychic terrain because the ability only sets up the terrain. The thing preventing priority from hitting the opponent is a field effect, not an ability.I can't remember if this has already been asked, but I could not find it in the OP so here it goes: Since levitating pokemon are not protected by psychic terrain, what happens if a pokemon with mold breaker (or one of its clones) tries to use priority against a pokemon with levitate while under the effects of psychic terrain?
Incase I misread your question: the Pokemon with mold breaker can still use priority on the levitating opponent. Psychic terrain doesn't stop pokemon from being able to use priority attacks. It just protects grounded Pokemon from receiving damage from them.
Do the seeds only work on grounded pokemon, or can they activate if they are in the air?
Was trying to test this myself last night but it seems anything that can use terrain is borderline post game and I'm still early in my copy of Sun. Would appreciate it if someone could test this.Was this tested? I don't see any mention of this in the OP. I'd assume they wouldn't trigger, but the in-game text doesn't have the grounded part like the terrain descriptions.