Okay, so I'll play:

Ho-oh
Entei
Jirachi
Kyogre
Dialga & Palkia
Latios
Regice, Regigias & Regieleki
Deoxys neutral & defence
Manaphy & Phione
Ground Shaymin
Heatran
Aria Meloetta
Cobalion, Terrakion & Virizon
Thunderus, Tornadus & Landorus
Kyurem
Genesect
Xerneas
Diance
Volcanion
Tapu Koko & Fini
Solegeo
Cosmog
Magearna
Zeraora
Dark Urshifu
Calyrex
Zerude
Zamazenta


Since I'll be playing the sea duo, you can keep the melted metal duo. 
Phione is like a child of Manaphy, right?