Su Huan has already slain quite a few Tier Three Evolution Beasts, the National Guardian Divine Beasts of the Four Nations are of this level.
Most operate alone, and for top forces, they are just a bit troublesome, but as long as they are willing to pay the price, they can stack them to death.
But in the Rust Area, metal weapons can't be used, sealing humanity's strongest means, and Iron Eagle is a flying unit, making ground assault tactics ineffective; even if they have Tier Three Evolvers, they are reluctanct to fight to the death with an Evolution Beast.
Tier Two is purely for sacrifice, but the arena is related to the core of the Dragon Gate, so it cannot stop, hence they offer to the eagle flock.
It's troublesome for them, but for Su Huan, it's just a snap of the fingers.
Tier Four is a complete crush on life level compared to Tier Three, killing a Tier Three is as easy as picking a cucumber from the field.
