This is just a humble request of the community to identify the fabulous spell/ability the NPC healers/menders cast with great proficiency in the later levels of the game. And may it be possible for this one to possess such power?
Example: This one begins a fight with a common 3-piece mob; two melee and one mender, all at same level as this one. Knowing from previous experience that healers should be targeted first, this one concentrates solely on defeating them first. This one braves many sword slashes, dodges many arrows, and manages to injure the mender to a sliver of its health. There is still a sliver left of the mender health bar though, and it starts to raise its left hand, seemingly in preparation to cast a spell/ability, but the healing starts before the animation for the hand finishes, raising the health of itself and its brethren to the top. Now this one knows through experience that these mobs often have between 1500-2000 HP a piece. This one also searches for comparable healing skills/abilities in current character classes, but finds nothing close. An Ultimate ability really helps to eliminate menders fast, but this one likes to save these infrequently available skills for boss encounters.
Health potions, even made by a talented alchemist, often heal just over 10% of health instantly, and another less than 10% over 10 seconds, and have a cooldown of 30 seconds.
As a Templar, this one can instantly heal about 15% of health, but this costs 20% of magicka pool, so cannot fully heal without much regen time passing.
A simple, very common encounter like this reminds this one of sweeping a porch next to a great sand dune on a particularly windy day back home in Elsweyr.