ref: d596a0c83bfbb97bff5cdb5b3bba925d3f798fa1
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