highrollinggambler
asked:
So quick question why would Merlin tell the others to find the original Dark One when they have no intentions but to destroy all of life itself?
rosexknight
answered:

Uh…Maybe Merlin didn’t know that? Or thought Emma could be stronger? After all he didn’t know he was gonna get tethered to a sword and stuff. So…yeah?

silver-tongues-blog

because he can’t see the finer details probably. He put his trust in Arthur but arthur became consumed by merlins words, something merlin didn’t see for himself.