The Rule of Skill was a special authority that Xi Wei had bestowed upon all his believers in the Church of Games.
And it was exactly why buffs work for Players, but not for believers of other gods.
One of which was Eleena's Survival Tactics: Infinity.
Most Players would have assumed that it was an AoE purification skill from its effect just a moment ago, but that was not true.
After all, the real effect of Survival Tactics: Infinity was to forcefully reset the status of every Player—be it friendly or hostile—within its area of effect.
Yes—it worked only on Players and would not work on allies or enemies. All buffs or debuffs would all be reset, and everything including the Players' HP and MP would be replenished in full.
Given that Eleena was the Saintess (in-training) and that Saintessess were of equal rank to popes or other religious leaders, she was therefore given such authority over all Players (believers).