Blazing Starcross, The Eternal Purity

[Gohar]

Creatures (23 Gravity, 7 Earth, 30 Total):
4 x Steady Roots --- [cost 2 Earth]
2 x Mesmera Cobra --- [cost 3 Gravity]
1 x Black Carpet --- [cost 9 Gravity]
2 x Kraken Eleganto --- [cost 6 Gravity]
3 x Auroch --- [cost 5 Earth]
3 x Ikoro --- [cost 2 Gravity]
2 x Amnes Amon --- [cost 4 Gravity]
2 x Sentient Gorge --- [cost 4 Gravity]
2 x Compost Bri --- [cost 5 Gravity]
3 x Interpret Coda --- [cost 5 Gravity]
1 x Night Legion --- [cost 9 Gravity]
4 x Bloomungus --- [cost 2 Gravity]
1 x Ambuscadara --- [cost 7 Gravity]

Spells (3 Gravity, 2 Fire, 3 Earth, 8 Total):
2 x Free from Oppression --- [cost 3 Earth]
1 x Wooden Hammer --- [cost 1 Earth]
2 x Steady Aim --- [cost 2 Fire]
3 x Impel End --- [cost 5 Gravity]

Runes (2 Radiance, 2 Total):
2 x Unity Matrix --- [cost 2 Radiance]

Cost info:
1 : E
2 : RR GG GG GG GE EE EF F
3 : GG EE
4 : GG GG
5 : GG GG GG GG EE E
6 : GG
7 : G
8 :
9 : GG

Average cost = 3.775

Creatures / Spells / Runes: 30/8/2

2 Radiance, 0 Wind, 0 Ice, 0 Water, 26 Gravity, 10 Earth, 2 Fire, 0 Lightning

Blockers: 7.5000005% (3/40).
Damage 2: 12.5% (5/40).
Damage 3: 12.5% (5/40).
Exhausters: 2.5% (1/40).
Responcers: 7.5000005% (3/40).
Unblockables: 5.0% (2/40).

[Mikara]

I would swap out bloomungus for a few fairyrings and mesmra cobra, and probably ditch the night legion as well. The fairy rings are a much stable creature than bloomungus, and have the ability to become big threats late game. Mesmra cobra would help levy more advantage to your high powered deck, allowing you to take out opposing creatures a bit more easily. You seem to have too many five cost cards compared to your 3 and 4 drops. That may be why your having some progression issues late game.