I found a new ( in my eyes ) Grindspot with instanst respawn!
Level need: 74+
Here a screenshot:
Kill the 3 Enemys and they will instant ( 1 sec ) respawn!
As Paladin you need a Glyph that will give you Mana when you use your Judgment. Than you will never go out of Mana.
Sorry for my bad english!
(and sorry if its old)