Forgotten Temple of the Deep (SDRE-EN034) [Structure Deck: Realm of the Sea Emperor]

While this card is on the field, this card's name is treated as "Umi". Once per turn, you can select and remove from play 1 face-up Level 4 or lower Fish-Type, Sea Serpent-Type or Aqua-Type monster you control. (This effect can be activated during either player's turn.) Special Summon it during your End Phase.