New units. Their discussion and selection of upgrades.

If the enemy specializes in light magic, I choose light unicorns. I always level up chaos instead of light. I take emerald dragons because they aren't affected by my magic defense.

The idea is good, but if the opponent uses antimagic on their archers on the first turn (while also defending against chaos), the effectiveness of the light unicorns will be nullified, and you can just read about general light spells.