Instant cast, no cooldown, exactly like restore and great healing pool.
Lv3 uses 1088 MP and 156 SP, Lv4 uses 1304 MP and 211 SP. (I'll need to check other toons to see what lower levels require).
Edit: Actually won't have to look it up, Elfie got it in the OP :
Level 1- Heals target continuously for 305 HP and 185 SP/MP over 18 seconds (available at lvl 34 ) costs 2 skill points
Level 2- Heals target continuously for 510 HP and 330 SP/MP over 18 seconds (available at lvl 45 ) costs 2 skill points
Level 3- Heals target continuously for 7705 HP and 515 SP/MP over 18 seconds (available at lvl 56 ) costs 3 skill points
Level 4- Heals target continuously for 905 HP and 720 SP/MP over 18 seconds (available at lvl 67 ) costs 3 skill points
This is a very good skill to have, It actually heals more than Restore than regenerates MP and SP on top of it. You can use it when youre on the run and need to boost up your precious SP or in PvE.
With one mistake tho - Lv3 actually heals for 770 HP and not of 7705 HP