Druids are HoT Masters:
Druid hots gain 'mini tics' that go off 3 seconds after normal tics, healing for 8/16/24/32% of the normal amount.
Reduces the problem hots have with randomly ticcing on a full hp target, and just further cements druids as HoT-masters.
EG:
Relic HoT lands on a target and 2 seconds later the first tic goes off, healing might look like this (with 2 ranks done):
0s: HoT Lands
2s: Heals for 1000
5s: Heals for 160
8s: Heals for (2000 Crit)
11s: Heals for 160
14s: Heals for 1000
17s: Heals for (320 Crit)
20s: Heals for 1000
23s: Heals for 160
Maybe (maxed) 32% extra healing seems OP, but HoTs tic on full-hp targets so often already, and have other inherent disadvantages compared to up-front healing that they need a lot of efficiency to be be competitive.
This I like. Really neat idea.
Talking about druids, since vim is a druid thing.
In groups the healing from critical overheals vimming (verbed) to those neaby would be significant (-ly more than watching crits do jackall more than a regular heal)
This is basically the cleric tome, over heal causes a portion of the over heal to spill over to the group. Which is a cool tome and i wish druids could have it. However, in a 6man context the "vim effect" doesn't matter because it's only your group and so you see numbers if you even crit when the person is 100% hp you are splitting 10k (crit heal) 6 ways so that's 1,666hp to the rest of the group if it isnt scaled at all. This again is already a tome for clerics for group spill over and is amazing. I also don't see them making the same tome but allowing it to hit potentially more targets
AND in raids a group heal could top off the entire raid
Based on numbers that the over heal would proc a heal 100% of what the over heal is.... so not realistic. Also t have a group heal over heal be splashed over is also not realistic but I will entertain your idea.
With healing increment 8 cascading vim does 17,980 heal, making it 998 heal per person in raid (assuming your grouped up). A group heal is 2,207 per person totaling 13,243. Even if you crit healed to make it a total of 26,486 because you decided to gheal with your group at full health it is a 1,471 heal per person which is a very good amount (which is why they wouldn't allow the group heal to be counted for the overheal splash. Hence the cleric tome is for single target heals only) but you have to crit the group heal and the group has to be full health. So lets do a realistic number. the group is at 50% when the heal goes off. Keeping to the healing 8 tier let say the group average 9k hp per person. So your heal you need to top the group off alone is 27,000 total. The crit heal would just about cover the group, no over heal. So if you are over healing like crazy, doing group heals at 80% yeah I guess this tome would be powerful if you are lucky to crit the spill over but why the hell would you be doing a group heal when the group is at 80%?
Now if this was applied like the cleric tome as a single target heal would proc this, lets say you overheal for 5k, split 18 ways at 100% overheal wud be 277. Which would be further scaled down because cleric is only liek 100hp per person in group so vim would end up like 10hp per person in raid making it silly to have a vim effect.
a boss fight's worth of druid HoT overheal crits could easily be five digits of extra healing
I guess if this tome you want procs this overheal thing every time and the druid hot ticks everytime the tank is at full hp. A crit relic hot at Healing 8 is 1,103 and split 18 ways is 61hp per person so to hit this 5 digits of extra healing you are talking about the hot would need to proc at full amount 163 times.
clerics can overheal for a shitload more than 2k on a crit AND shaman/cleric have two empty class tome slots AND since it isn't focus on HoTs it doesn't heavily favor druids AND it would be a mechanic that is gravy without throwing off your casting rotation AND it would make crits kind of exciting again. So yeah, a small crit during a raid would be pretty minor in itself, ya got me.
My bad for picking a number that isnt outrageous like your healers aren't critting the tank at full hp.
The idea to make any overheal into a vim like effect is still silly. Just cast the spell cascading vim. And all these numbers are based on if the overheal does 100% what the actual over heal is, which in practice it would be a percent amount of the over heal not the whole amount, which further makes the point of having a percentage of the over heal split 18 ways is not a great idea. The overheal vim idea is only useful if you are healing when the person/group is above 80%. I rather have the cleric tome where it splash heals the group because then its actually useful since you arent splitting it 18 ways. It's useful in 6mans and raids because it does something. A vim effect would in 6man yes mimic the cleric group splash but on a raid would be ridiculously low amount (look at the numbers, I gave you the best possible numbers/crits it could do).
Just my 2 cents on the idea.