Lemuria, the Forgotten City – (Legendary Duelists Duels From the Deep) – (LED9-EN055) – (Common)

This card’s name is treated as “Umi”. All WATER monsters gain 200 ATK and DEF. Once per turn, during your Main Phase: You can have all WATER monsters you currently control gain Levels equal to the number of WATER monsters you currently control, until the End Phase.