efekty po opuszczeniu regionu

options:
	czas: 2
	tier: 2
	efekt: speed
	region: spawn
on region enter:
	if "%region%" contains "{@region}":
		if "%player's potion effects%" contains "speed of tier 2":
			remove speed from player
		apply potion of speed of tier {@tier} to player for {@czas} seconds
on region leave:
	if "%region%" contains "{@region}":
		if "%player's potion effects%" contains "speed of tier 2":
			remove speed from player