That's 3
Aether Inspector
Done
Spidey: 20
Energy: EE
Hand: 11
Battlefield:
(T) Swamp
(T) Island
(T) Mt
(T) Plains
Gonti's Machinations (Whenever I lose life for the first time each turn, I get E.; Pay EE, Sac ~: Mooseman loses 3 life. I gain life equal to the life lost this way)
(U) Implement of Ferocity (G, Sac ~: Put a +1/+1 ctr on target creature. Activate this ability only any time I can cast a sorcery.; When ~ is put into a graveyard from the battlefield, draw a card)
(T) Frontline Rebel (3/3; ~ attacks each combat if able)
(S) Aether Inspector (2/3; Vigilance; When ~ ETB, I get EE; Whenever ~ attacks, I may pay EE. If I do, create a 1/1 colorless Servo artifact creature token)
Graveyard:
Exile:
==========================================================================
Mooseman: 17
Hand: 12
Energy: E
Battlefield:
(U) Swamp
(U) Island
(T) Mountain
(T) Forest
(U) Verdant Automation (1/2,3G: Put a +1/+1 counter on ~.)
(U) Aetherstream Leopard (2/3,Trample. When ~ ETB, you get {e} (an energy counter). Whenever ~ attacks, you may pay {e}. If you do, it gets +2/+0 until end of turn.)
(S) Hidden Herbalists (2/2,Revolt — When Hidden Herbalists enters the battlefield, if a permanent you controlled left the battlefield this turn, add {G}{G})
Graveyard:
Exile: