I don't have any responses, so assuming you don't, they both die.
Cast Face Down Creature, done
Melkor: 8
Hand: 1
Library: 25
Battlefield:
(T) (T) (U) (U) Island x4
(T) (U) Plains x2
(U) Cursed Scroll (3, T: Name a card. Target opponent chooses a card at random from your hand. If he or she chooses the named card, Cursed Scroll deals 2 damage to target creature or player.)
Gaseous Form (Prevent all combat damage that would be dealt to or by enchanted creature)
(S) Face Down Creature (2/2)
Graveyard: Time Ebb, Cancel, Revered Dead, Revered Dead, Blade of the Sixth Pride, Ward of Lights
Exile:
----------------------------------------------------------------------------------------
Spiderman: 3
Hand: 2
Library: 25
Battlefield:
(T,T,U,U) Plains x4
(T,T) Swamp x2
(U) Akrasan Squire (1/1; Exalted) Dead?
(U) Rabid Rats (1/1; T: Target blocking creature gets -1/-1 ueot) ~Gaseous~
(U) Skyhunter Prowler (1/3; Flying, Vigilance)
Graveyard: Glint Hawk Idol, Phyrexian Broodlings, Nomads en-Kor, Befoul
Exile:
Cast Face Down Creature, done
Melkor: 8
Hand: 1
Library: 25
Battlefield:
(T) (T) (U) (U) Island x4
(T) (U) Plains x2
(U) Cursed Scroll (3, T: Name a card. Target opponent chooses a card at random from your hand. If he or she chooses the named card, Cursed Scroll deals 2 damage to target creature or player.)
Gaseous Form (Prevent all combat damage that would be dealt to or by enchanted creature)
(S) Face Down Creature (2/2)
Graveyard: Time Ebb, Cancel, Revered Dead, Revered Dead, Blade of the Sixth Pride, Ward of Lights
Exile:
----------------------------------------------------------------------------------------
Spiderman: 3
Hand: 2
Library: 25
Battlefield:
(T,T,U,U) Plains x4
(T,T) Swamp x2
(U) Akrasan Squire (1/1; Exalted) Dead?
(U) Rabid Rats (1/1; T: Target blocking creature gets -1/-1 ueot) ~Gaseous~
(U) Skyhunter Prowler (1/3; Flying, Vigilance)
Graveyard: Glint Hawk Idol, Phyrexian Broodlings, Nomads en-Kor, Befoul
Exile: