For new players, especially to pve content Merciful auras is kind of the clear choice. ( passive healing, no extra button to press etc)
But come on blizzard… 9.9k healing / 2 seconds is literally the weakest heal ive ever seen in this game…
Basic dots in dungeons tick for over 100k per second. in m+ its around 3-500k / second
But at the moment it heals three people every 2 seconds, which isn’t a lot, and the aura mastery buff makes it heal everyone with a 20% healing increase… which is still not a lot, aura mastery lasts 8 seconds so that’s 4 ticks, which means 12’000 healing to the whole raid…4 times, 48’000 , even rounded at 50’000, 50’000 raidwide heal every 3 minute it’s not worth a talent point, especially because holy paladins as a lot of powerful nodes down there. Even after nerfs, you’d be better off picking Tyr’s Deliverance, Empyrean Legacy, or Veneration (yes, even on a caster oriented build).