Spirit Guardian Summoning was the ultimate skill of a tier 5 warrior.
While using this skill, a warrior would call forth an illusory image of their spirit guardian into the real world. And once summoned, the spirit guardian will enhance the warrior's power while using many skills to assist them in combat.
It was akin to temporarily allying with a deity. As a result, the strength augmentation it provided far exceeded the boost gained by possessing a spirit guardian.
The spirit guardian of the divine butterfly tribe, as its name implies, manifested as a colossal butterfly possessing extraordinary temporal abilities. This mythical creature was believed to traverse time and even foresee the future—a god-like entity existing beyond the natural laws of this world.