Adding my accolades to everyone else's. Worked perfectly the first time. Well the first time that I got it right. My first try, I had Chrom & Nexus switched in my line up and, consequentially, set them up with the wrong abilities - Nexus (1/1/2) & Chrom (1/2/2). Realized my mistake when Chrom came in. Tried to finish but failed miserably. (Duh!) Set the strategy up correctly, and I now have my first fight down in the long, long road to achieving Family Fighter. Thanks for the great strategy, Sproingzapa.
a few passes until you know you can safely life exchange with the nether faerie dragon should be 1 turn left on your blessing then throw in an arcane blast if you're lucky to live, back to yula celestial, life exchange if it's worth it( probably will be if you didn't get to arcane blast with nether faerie dragon), swap to chrominus howl+surge = win
the big problem was missing that turn 2 life exchange it's a free chunk of damage this strat completely misses.
Very good tactics. Turn 8 is RNG dependent, worked only for the 5th attempt for me. And as Stefania said don't worry if Nether Faerie Dragon don't die at turn 6. Howl from Chrominius will work even when Foulclaw's Crouch is on.