Heart of the Night

Having started developing Greta anew, I managed to reach level 16 before the first attack:
Nymphs 140
Dancers 109
Archers 114
Druids 55
Unicorns 23
Ents 11
Dragons 6
N 6
Z 13
K 3
Z 12
Skilled Avenger: Enchanted Arrow
Basic Education: -
Skilled Chaos: Lord of Cold, Freezing Touch
Skilled Machines: -
Advanced Summoning: Lord of Spells, Exorcism
Skilled Light: -
The Ring of the Dragon's Eye doesn't save in this battle, as the enemy's ballista eliminates all archers except for 6.