[s8e5] I Am A Sword Online

In the eighth season episode " I Am a Sword " of Adventure Time, Finn loses his sentient Finn Sword, leading to emotional guilt and a quest to retrieve it from Bandit Princess. The confrontation results in the loss of the sword's spirit when it's pierced by the Grass Sword, marking a significant, somber emotional shift for Finn . I Am a Sword | Adventure Time Wiki | Fandom