All right, so I take 5 and both creatures die.
Untap, upkeep, Draw
Swamp
Highway Robber
Goldenglow Moth
Done
Spidey: 12
Hand: 3
Library: 48
In Play:
(T,T) Plains x2
(T,T,T) Swamp x3
(S) Highway Robber (2/2; When ~ CIP, target opponent loses 2 life and I gain 2 life)
(S) Goldenglow Moth (0/1; Flying; Whenever ~ blocks, I may gain 4 life)
Graveyard: Youthful Knight, Skyhunter Prowler
RFG:
Mooseman: 16
Hand: 1
Library: 39
In Play:
(TTT) Island
(TT) Mountain
(T) Sage Owl (1/1, Flying. When Sage Owl comes into play, look at the top four cards of your library and put them back in any order. )
(T) Lightning Elemental (4/1, Haste)
Graveyard: Shock, Disperse, Kindled Fury, Lightning Elemental
RFG:
Untap, upkeep, Draw
Swamp
Highway Robber
Goldenglow Moth
Done
Spidey: 12
Hand: 3
Library: 48
In Play:
(T,T) Plains x2
(T,T,T) Swamp x3
(S) Highway Robber (2/2; When ~ CIP, target opponent loses 2 life and I gain 2 life)
(S) Goldenglow Moth (0/1; Flying; Whenever ~ blocks, I may gain 4 life)
Graveyard: Youthful Knight, Skyhunter Prowler
RFG:
Mooseman: 16
Hand: 1
Library: 39
In Play:
(TTT) Island
(TT) Mountain
(T) Sage Owl (1/1, Flying. When Sage Owl comes into play, look at the top four cards of your library and put them back in any order. )
(T) Lightning Elemental (4/1, Haste)
Graveyard: Shock, Disperse, Kindled Fury, Lightning Elemental
RFG: