The Truth

I did some digging. Fossilitation is the Third Form of the Sprit Spear Chastifol and is different from the Second Form, Guardian, which is literally the bear that grabs Ban because he uses it many times later and it is still the same bear.

One thing is that fossilization might be a form suited to be used in conjunction with another form, and even then would’ve been mostly useless in most of the fights. In Chandler’s first fight, King literally did such low amount of damage that I honestly do not think Guardian could’ve restrained Chandler for a second. Even while restrained, Fossilization still took a couple of second to stab through Ban and begin Fossilizing him, at which point even with the other sins, Chandler could’ve escape quickly. In the Battle at Camelot, King was busy trying to protect his friends, in which trying to restrain someone and then do a slow ass fossilizing, would’ve been akin to legit suicide against such high ranking demons, especially against Sinner. Against Mael, Demon King and Demon King Earth Form, Fossilization wasn’t an option, he didn’t want to hurt Mael nor Demon King Meliodas or Zeldoris, and against the literal Earth, turning it to stone is pointless and a waste of power.

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