Add 1 The Winged Dragon of Ra from your Deck or GY to your hand, and if you do, you can Tribute Summon 1 monster during your Main Phase this turn, in addition to your Normal Summon Set. (You can only gain this effect once per turn.) You can banish this card from your GY: If you Tribute Summon The Winged Dragon of Ra this turn, its original ATK DEF become the combined original ATK DEF of the monsters Tributed for its Summon. You can only activate 1 Ancient Chant per turn.