variables:
	{amulet::%player%} = true

on rightclick with diamond:
	if player's tool is diamond of unbreaking 10 named "&4Amulet Szybkosci":
		apply speed 4 to player for 10 minutes
		set {amulet::%player%} to false
		wait 10 minutes
		set {amulet::%player%} to true
command /amulet:
	trigger:
		add 1 diamond of unbreaking 10 named "&4Amulet Szybkosci" to player