I wouldn't say that Life against Nature is a piece of cake.
I tried playing this match – whoever goes first wins, the Priest does, if both have Warfare and Combat skills at level 5.
See – 1 – the Druid summons Manticores, casts Antimagic on himself, or something else. And the Priest casts Regeneration. Now, if the Nature player continues to summon, the Priest will continue to cast Bless as healing, Heavenly Shield, Nature's Guard on himself. And if the Priest does, Regeneration will do its job and prevent the Manticores from killing him.
Well, right now we're discussing a battle between Sorcerers without Warfare and Combat skills. A Druid and a Priest with Warfare and Combat skills can defeat each other in battle. The first move determines the winner. Look: Druid – summons a Magic Dragon. The second move, with 80% probability, will be another Magic Dragon. The Dragon casts Confusion on the Priest. The Druid's move – summons another Magic Dragon, and it casts another spell on the Priest. The operation is repeated until we gather enough Magic Dragons to kill the Priest with a Lightning Strike. Let's go back to the beginning: If, after summoning the Magic Dragon for the first time, it doesn't move immediately, then it's the Priest's turn, and let him cast Regeneration. And the Druid with the Dragon repeats the operation that I described above.