Oh boy.
So the Artic didn't actually die as the Brawler was only 4/4, so it should have three age ctrs on it and you should have three lands in some combination of G and W tapped, right?
Untap, upkeep - add age ctr to Fallen, pay CU
Wait for you to confirm the above before continuing...
Spidey: 23
Hand: 2
Battlefield:
(U,U) Forest x2
(U,U) Plains x2
(T) Mt
(U,U) Swamp x2
(U) Island
(U) SC Island
(U) SC Mt
(T) Phyrexian Ironfoot (3/4; ~ doesn't untap during my untap step.; 1S: Untap ~ (S can be paid with one mana from a snow permanent))
(U) Juniper Order Ranger (9/11 from ctrs; Whenever another creature ETB under my control, put a +1/+1 ctr on that creature and a +1/+1 ctr on ~) *7 +1/+1 ctr*
(U) Ronom Serpent (Snow Creature-Serpent; 6/7 from ctr; ~ can't attack unless defending player controls a snow land.; When I control no snow lands, sac ~) *1 +1/+1 ctr*
(U) Frostweb Spider (2/4 from ctr; ~ can block as though it had flying; Whenever ~ blocks a creature with flying, put a +1/+1 ctr on ~ at end of combat) *1 +1/+1 ctr*
(U) Wolf creature token (3/3 from ctr and Sound the Call; This creature gets +1/+1 for each card named Sound the Call in each graveyard) *1 +1/+1 ctr*
(U) Balduvian Fallen (4/6 from ctr; CU 1; Whenever ~'s CU is paid, it gets +1/+0 ueot for each R or B spent this way) *1 +1/+1 ctr* *1 age ctr*
Graveyard: Frost Raptor, Ronom Hulk, Surging Might, Rimewind Taskmage, Boreal Druid, Sound the Call, Simian Brawler
Exile:
=====================================================================
Mooseman: 16
Hand: 3
Battlefield:
(TU) SC - Plains
(T) Swamp
(T) Island
(TTT) Mountain
(TUU) SC-Forest
(T) Mouth of Ronom(T:1)
(U) Adarkar Valkyrie (4/5 Snow Creature Flying, vigilance Tap: When target creature other than Adarkar Valkyrie dies this turn, return that card to the battlefield under your control.)
(U) Artic Nishoba (6/6 Trample, Cumulative upkeep G or W When Arctic Nishoba dies, you gain 2 life for each age counter on it.)*3 age ctr*
(S) Ronom Serpent (5/6 Ronom Serpent can't attack unless defending player controls a snow land. When you control no snow lands, sacrifice Ronom Serpent.)
Graveyard: Simian Brawler, Martyr of Frost, Ronom Hulk, Martyr of Ashes, Surge of Flame, Wall of Shards, Boreal Centaur
Exile: Grim Harvest
So the Artic didn't actually die as the Brawler was only 4/4, so it should have three age ctrs on it and you should have three lands in some combination of G and W tapped, right?
Untap, upkeep - add age ctr to Fallen, pay CU
Wait for you to confirm the above before continuing...
Spidey: 23
Hand: 2
Battlefield:
(U,U) Forest x2
(U,U) Plains x2
(T) Mt
(U,U) Swamp x2
(U) Island
(U) SC Island
(U) SC Mt
(T) Phyrexian Ironfoot (3/4; ~ doesn't untap during my untap step.; 1S: Untap ~ (S can be paid with one mana from a snow permanent))
(U) Juniper Order Ranger (9/11 from ctrs; Whenever another creature ETB under my control, put a +1/+1 ctr on that creature and a +1/+1 ctr on ~) *7 +1/+1 ctr*
(U) Ronom Serpent (Snow Creature-Serpent; 6/7 from ctr; ~ can't attack unless defending player controls a snow land.; When I control no snow lands, sac ~) *1 +1/+1 ctr*
(U) Frostweb Spider (2/4 from ctr; ~ can block as though it had flying; Whenever ~ blocks a creature with flying, put a +1/+1 ctr on ~ at end of combat) *1 +1/+1 ctr*
(U) Wolf creature token (3/3 from ctr and Sound the Call; This creature gets +1/+1 for each card named Sound the Call in each graveyard) *1 +1/+1 ctr*
(U) Balduvian Fallen (4/6 from ctr; CU 1; Whenever ~'s CU is paid, it gets +1/+0 ueot for each R or B spent this way) *1 +1/+1 ctr* *1 age ctr*
Graveyard: Frost Raptor, Ronom Hulk, Surging Might, Rimewind Taskmage, Boreal Druid, Sound the Call, Simian Brawler
Exile:
=====================================================================
Mooseman: 16
Hand: 3
Battlefield:
(TU) SC - Plains
(T) Swamp
(T) Island
(TTT) Mountain
(TUU) SC-Forest
(T) Mouth of Ronom(T:1)
(U) Adarkar Valkyrie (4/5 Snow Creature Flying, vigilance Tap: When target creature other than Adarkar Valkyrie dies this turn, return that card to the battlefield under your control.)
(U) Artic Nishoba (6/6 Trample, Cumulative upkeep G or W When Arctic Nishoba dies, you gain 2 life for each age counter on it.)*3 age ctr*
(S) Ronom Serpent (5/6 Ronom Serpent can't attack unless defending player controls a snow land. When you control no snow lands, sacrifice Ronom Serpent.)
Graveyard: Simian Brawler, Martyr of Frost, Ronom Hulk, Martyr of Ashes, Surge of Flame, Wall of Shards, Boreal Centaur
Exile: Grim Harvest