Dragonkin Team: Nether Faerie Dragon (S/S) - 2, 2, 1. S/S breed is the weakest for this fight, but I have only it. Other breeds are preferred.
Emerald Proto-Whelp (P/P) - 2, x, x
Azure Whelpling (P/P) - x, 1, 1
Nether Faerie Dragon: 1 - Moonfire
2 - If Deathscreech used Greater Apocalypse in the first turn then Arcane Blast otherwise Life Exchange
3 - If Deathscreech used Greater Apocalypse in the first turn then Life Exchange otherwise Arcane Blast
4+ - Arcane Blast
I used sprite darter hatchling in place of the nether faerie dragon and chrominius in place of the azure whelpling, used life exchange on turn 2 and managed to finish the fight with just an arcane explosion
This strategy works but tweek it slightly. The 2nd Arcane Storm is not necessary and the mana surge does good damages since AS is already up. I would put Chrominius in the last slot with surge of power and he finishes him post haste!
Big RNG-issues at play in this one, apparently. The first try, all three Dragons died and Deathscreech was still fairly healthy. Second try, same moves, the third dragon didn't even have to come into battle. Good strategy, just have patience if it doesn't work at first. Thanks, Xu-Fu.