Talk:SAVE/@comment-3040277-20151124051426/@comment-26354294-20160213013528

Perhaps Sans had that power before Flowey, Chara, and Frisk, since he knows of it, but never uses it for a similar reason to Flowey; when another Determined person is in the underground, all other powers of Determination are made useless. This can also explain why Sans lived a little longer when he was almost killed; DETERMINATION!

Also might be why he's very powerful.