I think so.
I'll discard Lionheart Maverick.
Untap, upkeep - tap your Prowler
Shattering Spree your Signet, triggering the Dragonauts
Everyone attack for 9
Game?
Spidey: 14
Hand: 2
In Play:
(U) Forest
(U) Plains
(T,U) Mt x2
(U) Island
(U,U) Swamp x2
(T) Wee Dragonauts (1/3, flying, Whenever I play an instant or sorcery spell, ~ gets +2/+0 ueot)
(T) Skarrgan Pit-Skulk (2/2 due to ctr, Creatures with power less than Skarrgan Pit-Skulk's power can't block it.) *1 ctr*
(T) Harrier Griffin (3/3, at the beginning of my upkeep, tap target creature)
(T) Steamcore Wierd (1/3, when ~ CIP, if R was spent to play ~, it deals 2 dmg to target creature or player)
Graveyard: Izzet Signet, Wild Cantor, Primeval Light, Poisonbelly Ogre, Shrieking Grotesque, Scab-Clan Mauler, Crystal Seer, Lionheart Maverick, Shattering Spree
RFG:
MM: 9
Hand: 2
In Play:
(T) Plains
(T) Island
(TT) Swamp
(TT) Mountain
(T) Forest
Cryptwailing (1, Remove two creature cards in your graveyard from the game: Target player discards a card. Play this ability only any time you could play a sorcery.)
(T) Gruul Scrapper (3/2, When ~ CIP, if R was spent, it gains haste until EOT.)
(T) Bloodscale Prowler (4/2, Bloodthirst 1)
Graveyard: Siege of Towers, Necromancer's Magemark, Shadow Lance
RFG: Cry of Contrition, Benediction of Moons, Martyred Rusalka, Skarrgan Pit-Skulk,Scab-Clan Mauler, Torch Drake, Shattering Spree