Ohhhhkay there, vengeful Donnie. o.O
Why do I feel like if Donnie lost his mind he'd gladly experiment on his enemies... lol
Suppressed evil (but only to baddies) mad scientist lurking within that one.
Apparently just hurrying up and eating the heart, preventing anyone else from getting it, did not cross Don Vizioso's mind. If that would presumably not lead to anything other than destroying it, heck it would have saved the Turtles some trouble as well... just force him to eat it, making sure he chews well, and be done with it. lol
And exactly how big are Tiger Claw's hand-paws?? The seal fits right in his palm fine, yet in April's hands it's almost the size of a damn pizza tray. Eesh.