It's a multi-use magical flute, it makes rats as well as controls them! No one wants a mono-tasking magical device in their collection.

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Transcript:

P1: "Cowards," Odell shouts after the rats.

P2: Standing on his throne he plays a new tune, the baked goods that made of pars of this throne reform as a pair of giant rats made of pastry. Odell says, "If you won’t defend me, I’ll make rats who will!"

P3: One of the rats jumps towards the illusory cat as it meows again. 

P4: However, it's trajectory is off, and and begins to descend towards Erry who stares in frozen horror at the wall of rat-shaped baked goods.