Therefore, my favorite tactic was as follows:
Appreciating the Ruby of Ang, I saved it and, in battle, cast Mass Blessing, and the Fairies would eliminate the left stack of the enemy's troops with their first attack. Dryads would eliminate half of the right stack with their second attack. After that, I would cast Glower's Armor on the Dryads, from which they could summon Thorns, sing Lullaby, and chant War Chant. In the second round, after waiting for the monsters to fully retaliate against the Fairies, I would send them back in time, and in the third round, they would deal another devastating blow, after which the remaining troops would finish off the rest.