That's 9
Plains
Done
Spidey: 19
Hand: 5
Battlefield:
(U,U) Mt x2
(U) Forest
(U,U) Swamp x2
(U,U) Island x2
(U,U) Plains x2
(U) Azorius Guildgate (~ ETB tapped.; T: Add W or U to my mana pool)
(U) Orzhov Signet (1, T: Add WB to my mana pool)
Gruul War Chant (Attacking creatures I control...