On the Spell Power one instead the critical hit value is 0 on the tooltip.
"... and the blue fire of Helluin flickered in the mists above the borders of the world, in that hour the Children of the Earth awoke, the Firstborn of Ilúvatar."
Depends on the build on whether it is useful. If I need to put a weaker skill on bar to apply buff or instead can have a stronger dps rotation without it so long as I use potions instead, it is a decision worth making.