You keep forgetting you edit your hand size.
EOT, I'll discard Frantic Purification to Mortiphobia to remove Petravark from the game. Additionally, I shall invoke madness on the F.P. to destroy your Shade's Form.
Untap, Upkeep, Plains, Aven Trooper. Done.
Ransac: 12
Hand: 7
In Play:
(U) Island
(U,U,T) Swamp
(T,T,U) Mountain
(U,U) Plains
Mortiphobia (1B, Discard a card: Remove target card in a graveyard from the game. 1B, Sacrifice Mortiphobia: Remove target card in a graveyard from the game.)
(U) Cabal Torturer (1/1, B, Tap: Target creature gets -1/-1 until end of turn. Threshold - 3BB, Tap: Target creature gets -2/-2 until end of turn. Play this ability only if seven or more cards are in your graveyard.)
(S) Aven Trooper (1/1, flying, 2W, Discard a card: Aven Trooper gets +1/+2 until end of turn.)
Graveyard: Churning Eddy, Far Wanderings, Violent Eruption, Frantic Purification
RFG: Hydromorph Guardian
Mooseman: 17
Hand: 8 (Island)
In Play:
(T) Plains
(T) Island
(TT) Swamp
(TT) Mountain
(T) Forest
(S) Krosan Constrictor (2/2, Swampwalk T: Target black creature gets -2/-0 until end of turn.)
Graveyard: Skullscorch, Liquify, Shade's Form
RFG:Enslaved Dwarf, Churning Eddy, Petravark
Ransac, cpa trash man