Well, the 'Thopter is 1/3 already from exalted, so pumping him twice gives him 3/3 and thus kills your Spider... unless I'm missing something?
Swamp, Done
Spidey: 19
Hand: 4
Library: 30
Battlefield:
(T,T) Plains x2
(T,T,U) Swamp x3
(U) Akrasan Squire (1/1; Exalted)
(T) Roterothopter (0/2; Flying; 2: ~ gets +1/+0 ueot. Activate this ability no more than twice each turn)
(U) Slinking Skirge (2/1; Flying; 2, Sac ~: Draw a card)
Graveyard:
Exile:
Mooseman: 17
Hand: 3
Library: 30
Battlefield:
(T) Swamp
(U) Mountain
(UT) Forest
Chime of Night (When Chime of Night is put into a graveyard from play, destroy target nonblack creature.)
(U) Wall of Diffusion (0/5, Wall of Diffusion can block creatures with shadow.)
(U) Metallic Sliver (1/1) ~ The bells are ringing~
Graveyard: Canopy Spider
Exile:
Swamp, Done
Spidey: 19
Hand: 4
Library: 30
Battlefield:
(T,T) Plains x2
(T,T,U) Swamp x3
(U) Akrasan Squire (1/1; Exalted)
(T) Roterothopter (0/2; Flying; 2: ~ gets +1/+0 ueot. Activate this ability no more than twice each turn)
(U) Slinking Skirge (2/1; Flying; 2, Sac ~: Draw a card)
Graveyard:
Exile:
Mooseman: 17
Hand: 3
Library: 30
Battlefield:
(T) Swamp
(U) Mountain
(UT) Forest
Chime of Night (When Chime of Night is put into a graveyard from play, destroy target nonblack creature.)
(U) Wall of Diffusion (0/5, Wall of Diffusion can block creatures with shadow.)
(U) Metallic Sliver (1/1) ~ The bells are ringing~
Graveyard: Canopy Spider
Exile: