All right, you take 1 from the unblocked Pixie and your Blacksmith is out.
Swamp
Grapeshot Catapult
Done
Spidey: 21
Hand: 9
In Play:
(T,T,U) Plains x3
(T) Forest
(T,T) Swamp x2
(U) Tablet of Epityr (Whenever an artifact I control is put into the graveyard from play, I may pay 1. If I do, I gain a life)
(T) Argothian Pixies (3/2 due to ctr, ~ can't be blocked by artifact creatures. Prevent all dmg that would be dealt to ~ by artifact creatures) *1 +1/+1 ctr*
(T) Argivian Blacksmith (2/2, T: Prevent the next 2 dmg that would be dealt to target artifact creature this turn)
(T) Argothian Pixies (2/1, ~ can't be blocked by artifact creatures. Prevent all dmg that would be dealt to ~ by artifact creatures)
(U) Grapeshot Catapult (2/3, T: ~ deals 1 dmg to target creature with flying)
(S) Grapeshot Catapult (2/3, T: ~ deals 1 dmg to target creature with flying)
Graveyard: Ashnod's Transmogrant
RFG:
Mooseman: 15
Hand: 11
In Play:
(TU) Plains
(U)
(TT) Forest
Urza's Chalice (1: Any artifact cast by any player gives you 1 life. Can only give 1 life each time an artifact is cast.)
Weakstone (All attacking creatures lose -1/-0. Creatures with power less than 1 deal no damage.)
(U) Battering Ram (1/1, Banding when attacking. At the end of combat, destroy all walls blocking Battering Ram.)
(S) Dragon Engine (1/3, 2: +1/+0 until end of turn.)
Graveyard: Argivian Blacksmith
RFG:
Swamp
Grapeshot Catapult
Done
Spidey: 21
Hand: 9
In Play:
(T,T,U) Plains x3
(T) Forest
(T,T) Swamp x2
(U) Tablet of Epityr (Whenever an artifact I control is put into the graveyard from play, I may pay 1. If I do, I gain a life)
(T) Argothian Pixies (3/2 due to ctr, ~ can't be blocked by artifact creatures. Prevent all dmg that would be dealt to ~ by artifact creatures) *1 +1/+1 ctr*
(T) Argivian Blacksmith (2/2, T: Prevent the next 2 dmg that would be dealt to target artifact creature this turn)
(T) Argothian Pixies (2/1, ~ can't be blocked by artifact creatures. Prevent all dmg that would be dealt to ~ by artifact creatures)
(U) Grapeshot Catapult (2/3, T: ~ deals 1 dmg to target creature with flying)
(S) Grapeshot Catapult (2/3, T: ~ deals 1 dmg to target creature with flying)
Graveyard: Ashnod's Transmogrant
RFG:
Mooseman: 15
Hand: 11
In Play:
(TU) Plains
(U)
(TT) Forest
Urza's Chalice (1: Any artifact cast by any player gives you 1 life. Can only give 1 life each time an artifact is cast.)
Weakstone (All attacking creatures lose -1/-0. Creatures with power less than 1 deal no damage.)
(U) Battering Ram (1/1, Banding when attacking. At the end of combat, destroy all walls blocking Battering Ram.)
(S) Dragon Engine (1/3, 2: +1/+0 until end of turn.)
Graveyard: Argivian Blacksmith
RFG: