That's 3 and Done
Spidey: 16
Hand: 0
Battlefield:
(U,U,U) Forest x3
(U,U,U) Island x3
(U,U) Mt x2
(U) Swamp
(U) Plains
(U) Bonesplitter (Equipped creature gets +2/+0.; Equip 1)
(T) Marsh Flitter (3/1 from Bonesplitter; Flying; When ~ ETB, put two 1/1 black Goblin Rogue creature tokens...