Discard Arrogant Wurm to return the Aven to my hand, which I'll pay the Madness cost to play the Wurm.
Play the Skywing Aven again
Forest
Done
Spidey: 12
Hand: 7
In Play:
(T,T) Swamp x2
(T,T) Mt x2
(T,U) Island x2
(U) Plains
(T,U) Forest x2
(U) Hydromorph Guardian (2/2, U, Sac ~: Counter target spell that targets one or more creatures I control)
(S) Skywing Aven (2/1, flying, Discard a card: Return ~ to its owner's hand)
(U) Llawan, Cephalid Empress (2/3, When ~ CIP, return all blue creatures my opponents control to their owner's hands. My opponents can't play blue creature spells)
(S) Arrogant Wurm (4/4, Trample, Madness 2G)
Graveyard: Cabal Torturer, Fiery Temper, Ghostly Wings, Crippling Fatigue
RFG:
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rokapoke: 5
Hand: 2
In Play:
(UU) Plains x2
(TU) Island x2
(T) Mountain
(TU) Swamp x2
(T) Forest
(T) Soul Scourge (3/2; Flying. When ~ comes into play, target player loses 3 life. When ~ leaves play, that player gains 3 life.)
(S) Krosan Constrictor (2/2; Swampwalk. T: Target black creature gets -2/-0 until EOT.)
Graveyard: Crackling Club, Deep Analysis, Ghostly Wings, Strength of Isolation, Floating Shield, Deep Analysis, Mortiphobia, Cephalid Snitch, Turbulent Dreams, Cabal Ritual, Militant Monk, Spirit Flare (FB)
RFG: