Untap, upkeep, Draw, Watery Grave (not paying), Royal Assassin, Done.
Spiderman (19)
Hand: 3
Library: 50
In Play:
(T) Underground Sea (B/U Dual)
(T) Underground River (B/U Pain)
(T) Swamp
(T) Watery Grave (B/U Dual)
(U) El-Hajjaj (1/1, built-in spirit-link)
(S) Royal Assassin (1/1, T: destroy...