Moving this post from the thief forums, basically sigil of energy only restores 1 of the 3 bars for daredevils instead of 1.5 bars, the same applies to rune of the adventurer. Description says 50% but this may just be a need for description change cause not every class has the same endurance bars now with the introduction of daredevil, unless its intended that daredevils receive more than 50(not %) endurance when using this sigil.
RIP trapper rune ;-;