Tiamat [Beyond Destiny]

If you control 7 or more Wind Characters, Tiamat gains "Tiamat cannot be chosen by your opponent's Summons or abilities." and "If Tiamat is dealt damage by your opponent's Summons or abilities, the damage becomes 0 instead."

When Tiamat enters the field, choose 1 Character of cost 5 or more opponent controls. Break it.