Untap, upkeep, Draw, Watery Grave coming in tapped, Spire Golem, Done.
Spiderman: 12
Hand: 4
Library: 35
In play:
(T,U) Watery Grave x2 (B/U Ravnica Dual)
(U,U,U,U) Underground Sea x4 (B/U Dual)
(U,U) Island x2
(U) Icy Manipulator (1, T: Tap target land, creature, or artifact)
(U)...