ref: a5c1d9572c75fde821697c74b460522081c06aa3
dir: /engine/battle/move_effects/rain_dance.asm/
BattleCommand_StartRain: ; startrain ld a, WEATHER_RAIN ld [wBattleWeather], a ld a, 5 ld [wWeatherCount], a call AnimateCurrentMove ld hl, DownpourText jp StdBattleTextBox