Ocean Dragon Lord - Neo-Daedalus

[ Sea Serpent / Effect ] This card cannot be Normal Summoned or Set. This card cannot be Special Summoned except by Tributing 1 "Levia-Dragon - Daedalus". You can send "Umi" you control to the Graveyard to send all cards in both players' hands and on the field to the Graveyard, except this card. ATK/ 2900 DEF/ 1600