SA Mangog vs. King Thor
No Bfr, No undoing Mangog's spell. Thor must always choose to fight and beat Mangog through direct force. Can he beat SA Mangog? Fight is in indestructible dome the size of a football field.
Fight one
Thor doesn't have Mjolnir.
Fight two
Thor has and is worthy of Mjolnir. He is righteous in his faith.