This card's name becomes "Umi" while on the field. You can only use each of the following effects of "Warchief of Atlantis" once per turn. You can discard this card; add 1 Spell/Trap that mentions "Atlantis, City of the Sea Dragon" from your Deck to your hand. If you control "Umi" and this card is in your GY: You can Special Summon this card.