While you control another "Ancient Warriors" monster, your opponent's monsters cannot target this card for attacks. You can only use each of the following effects of "Ancient Warriors - Masterful Sun Mou" once per turn. • You can send 1 card from your hand or field to the GY; add 1 "Ancient Warriors" monster from your Deck to your hand, except "Ancient Warriors - Masterful Sun Mou". • If your other "Ancient Warriors" monster's effect is activated (except during the Damage Step): You can target 1 monster your opponent controls; return it to the hand.