I love MARLAI SINGARIEL right from frontier where I maxed her before I started using her in modern ranked battles.Since I started playing splinterlands game just six months ago, 90% of my wins are from MARLAI SINGARIEL led team.Because I have alot of magic water dealers in my deck collections.Like you said nothing real special about her,just her +1 magic to all allied units.

Now to the battle,You had a lot of game changing moment; during earthquake Ariel is not affected by of flying ability and when electrified is executed it doesn't affect your units.
Lastly, anasth soothsayer tank healing ability to any unit in the first position is awesome.And I love magic attack monster, especially when there is not restriction on their attack.Because they bypass armor and go straight to the health. Anyway kudos to you,I would say it was a mismatch 😂 😂 😂.More wins!!!