[DISCUSSION] How does gastro acid interact with the Tapu Terrains?

[ChaseInfinity]

GastroAcid wouldn't do anything because the terrain effects would already be activated before pyukumuku could use the move and even if they're ability gets removed it doesn't matter because the only way they could have used it again anyway is to switch out (which they would have done anyway to reset it), so there's basically no point in using on moves on the Tapus.
Pyukumuku being viable is another question, it just gets killed too easily, so it's difficult to use.