1 Tuner + 1+ non-Tuner WIND monsters
If this card is Synchro Summoned: You can target 1 "Windwitch" monster in your GY; inflict damage to your opponent equal to half its ATK. You can only use this effect of "Windwitch - Diamond Bell" once per turn. Once per turn, if your opponent takes battle or effect damage: You can target 1 card on the field; destroy it. This effect can be used up to twice per turn if this card was Synchro Summoned using only "Windwitch" monsters as material.