Since Zapp's powers let her control weather, that's what I'm having her do here. Her card's info says:
JIOJ-EN013:
My Plump Pony Pal Zapp
LIGHT / Plump Pony Pal-Type Synchro / Level 7 / ATK 0 / DEF 2650
1 Tuner + 1 or more non-Tuner "My Plump Pony Pal" monsters
When "My Plump Pony Pal Fili-Second" switches its ATK and DEF: You can switch this face-up card's ATK and DEF, and if you do, it can attack your opponent directly this turn. Once per turn, when this face-up card is destroyed by battle and sent to the Graveyard: You can Special Summon it from the Graveyard.
Super Rare