Wow, nice turn.
Untap, upkeep
Runewing
Equip the Saber to the Runewing
Forest
Done
Spidey: 5
Hand: 5
Battlefield:
(T,U) Island x2
(T,T,U) Swamp x3
(T,U) Mt x2
(T,U) Plains x2
(U) Civic Saber (Equipped creature gets +1/+0 for each of its colors.; Equip 1)
(S) Runewing (3/2 from Saber...