>>33297580Overheat/Fire Blast, Sludge Wave, Toxic and Dragon Pulse.
Her best item is focus sash and anyone who says otherwise is a fucking moron.
Maybe you could argue that choice scarf would help but given than she needs toxic and how fragile she is that really hurts more than helps. Life Orb is a better idea that fucks you over less but again sash is the better option.
Timid is the best choice of nature and most won't argue with this. I wish she had more moves to offer a variation of coverage or at least higher stats but those stats plus that ground weakness say a lot so that's why the move set above is the only one I usually use.
In doubles it shows more with every team running garchomp. For both I would recommend just pouring everything into her special attack and speed since she can't survive much with a sash and nothing without it so bring a spinner or defog carrier. Though every tapu being weak to her is helpful in singles and doubles. In doubles everything I said stands except that you might want to ditch dragon pulse for protect since everything in doubles needs protect.
Best wishes in raising your fuglizards.