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Tootsie, I'll describe the first strategy without any moral considerations.
You gather about 20 Lizards for the first turn.
You take Lizards, level 1 Gnolls, and a Dragonfly into battle. Place the Lizards at the top, shield them with the level 1 Gnolls. Use the Dragonfly to move the Cows around the bottom row. Also, take two Dwell Hydras on level 111 without any losses.