No it isn't.....
Untap, upkeep, Draw
Forest
Curse of Predation on you
Naya Charm to tap your creatures
Alpha strike for 22
Done
Spidey: 18 ~Cursed~
Enemy Commander Combat Dmg Dealt: 0/21
Hand: 3
Library: 88
Command Zone: 3BRG Prossh, Skyraider of Kher (5/5; Flying; When I cast ~, put X 0/1 red Kobold creature tokens named Kobolds of Kher Keep onto the battlefield, where X is the amt of mana spent to cast ~.; Sac another creature: ~ gets +1/+0 ueot)
Battlefield:
(T) Llanowar Reborn (~ ETB tapped.; T: Add G to my mana pool.; Graft 1) *1 +1/+1 ctr*
(U) Command Tower (T: Add to my mana pool one mana of any color in my commander's color identity (B, R or G))
(T) Kher Keep (T: Add 1 to my mana pool.; 1R, T: Put a 0/1 red Kobold creature token named Kobolds of Kher Keep onto the battlefield)
(T) Temple of the False God (T: Add 2 to my mana pool. Activate this ability only if I control 5 or more lands)
(T) Forest
(U) Viscera Seer (1/1; Sac a creature: Scry 1)
(U) Quagmire Druid (2/2; G, T, Sac a creature: Destroy target enchantment)
(S) Silklash Spider (2/7; Reach; XGG: ~ deals X dmg to each creature w/flying)
Graveyard: Restore
Exile:
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Mooseman: 39
Enemy Commander Combat Dmg Dealt: 0/21
Hand: 5
Library: 87
Command Zone: RWG Marath, Will of the Wild (Legendary Creature - Elemental Beast, 0/0, Marath, Will of the Wild enters the battlefield with a number of +1/+1 counters on it equal to the amount of mana spent to cast it. {X}, Remove X +1/+1 counters from Marath: Choose one — Put X +1/+1 counters on target creature; or Marath deals X damage to target creature or player; or put an X/X green Elemental creature token onto the battlefield. X can't be 0. )
Battlefield:
(T) Plains
(UT) Forest x2
(U) Mosswort Bridge ( Hideaway (This land enters the battlefield tapped. When it does, look at the top four cards of your library, exile one face down, then put the rest on the bottom of your library.)
T: Add G to your mana pool. G,T: You may play the exiled card without paying its mana cost if creatures you control have total power 10 or greater. )
(T) Smoldering Crater (~ ETB Tapped. T: R. Cycling 2)
(T) Selesnya Guildgate (, Gate, ETB Tapped. {T}: Add {G} or {W} to your mana pool. )
(T) Sol Ring (T:2)
Curse of Predation ( EP. Whenever a creature attacks enchanted player, put a +1/+1 counter on it. )
(T) Mold Shambler (Fungus Beast, 4/4, Kicker {1}{G}When Mold Shambler enters the battlefield, if it was kicked, destroy target noncreature permanent. ) ~1 +1/+1 cntr~
(T) Avenger of Zendikar (Elemental, 6/6, When Avenger of Zendikar enters the battlefield, put a 0/1 green Plant creature token onto the battlefield for each land you control. Landfall — Whenever a land enters the battlefield under your control, you may put a +1/+1 counter on each Plant creature you control. ) ~1 +1/+1 cntr~
(T) Plant Token (3/4) ~3 +1/+1 cntr~
(T) Plant Token (3/4) ~3 +1/+1 cntr~
(T) Plant Token (3/4) ~3 +1/+1 cntr~
(T) Plant Token (3/4) ~3 +1/+1 cntr~
Graveyard:Naya Charm
Exile: Face Down from Mosswort Bridge