Untap, upkeep, draw, Mountain, attack with Rock Hydra. Responses?
Spiderman: 16
Hand: 3
Library: 40
In Play:
(U,U) Underground Sea x2 (B/U Dual)
(T) Underground River (B/U Pain)
(U) Island
(U) Swamp
(T) Spire Golem (2/4, flying)
(U) Black Knight (2/2, first strike, pro-white)
(U) El-Hajjaj...