Sealed Area of the Ancients

[Archelaus]

While you control at least 5 cards: This card is cannot be destroyed by card effects. Once per turn: You can discard 1 Spell Card; banish 2 random cards in your opponent's hand  face-down until your opponent's next End Phase. During your Main Phase: You can choose 1 of the face-down cards banished by this card's effect; If the chosen card is a Spell Card, activate it this turn (if able) then return all cards banished by this card's effect to their owner's hand. If not, return all cards banished by this card's effect to their owner's hand.