I Was Told to Tank, So I Shredded the Demon King with Infinite Mana

When monstrous races invade and dungeons tear through reality, humanity awakens to supernatural powers. Qian Ming gets stuck with a mediocre B-rank talent—a measly 1% chance to reduce his next spell's mana cost to zero. Everyone writes him off. But his hidden second talent changes everything: it multiplies trigger rates by 100x. Suddenly, that 1% becomes a guaranteed 100%. While other awakeners chase damage, Qian Ming dumps every stat into defense and becomes an unkillable spellcasting fortress. Infinite mana. Infinite casts. The Demon King never saw it coming.