Warchief of Atlantis

“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.”