ref: 07e8efee7ea19a5ae09ccceb193e1f7e8dec64b1
dir: /engine/battle/move_effects/rain_dance.asm/
BattleCommand_StartRain: ld a, WEATHER_RAIN ld [wBattleWeather], a ld a, 5 ld [wWeatherCount], a call AnimateCurrentMove ld hl, DownpourText jp StdBattleTextbox