Paladog himself does not participate in this mode, but stands on the side with the next boss to encounter revealed the same way.
In five lanes will the enemy come in random, and whoever's given amount of troop reach the opposite border wins.
Safest, and all-around way to win these levels is to equip 2 rings which boost manaregeneration (this is almost guaranteed win after the first realm), and spam out waves in every lane, while protecting lanes with most enemy/weak units released by the strongest defensive unit the player have access to.
The units released by the level's special spells are all random, so cross your fingers.
A viable additional strategy is also to release a flow of rats in a well-protected lane with good advance.