Mana Corruption vs Mana Devouring
When Bai Zemin's body was surrounded by over a thousand mutant trees, all it took was a few swings of his spear to turn them all into iron limes.
It didn't matter if it was a Steel Leaf Mutant Tree whose leaves could easily pierce any armor with less than 2000 defense points and turn soul evolvers with average defense into sieves or if it was the Poison Fog Tree whose body exuded a strange haze undetectable to the naked eye which could paralyze the nervous system of a mutant beast above level 110; they were all shattered.
The toughest trees that were capable of taking even the fists of a level 130 King Kong Ape King could do nothing when the wind and fire arc born from the swinging Anqiuilation of the Falling Sky hit them, and the plants that had some level of intelligence and cunning had no time to think too much before they became ashes under the power of Bai Zemin's Crimson Flame.
"Really impressive! Not bad, not bad at all!"