Alector, Sovereign of Birds (Starfoil)

If your opponent controls 2 or more face-up monsters of the same Attribute, you can Special Summon this card from your hand. Once per turn, you can select 1 face-up card on the field. Its effect(s) is negated during that turn. There can only be 1 face-up "Alector, Sovereign of Birds" on the field.