ref: e5d4f741ee4135f937ad180b1353d70291a92c13
dir: /engine/battle/move_effects/rain_dance.asm/
BattleCommand_StartRain: ; 37bf4 ; startrain ld a, WEATHER_RAIN ld [wBattleWeather], a ld a, 5 ld [wWeatherCount], a call AnimateCurrentMove ld hl, DownpourText jp StdBattleTextBox ; 37c07