One of the buffs resto Druids got this patch was the new Wild Mushrooms, which absorb any overhealing (both resto druids and shamans tend to suffer from lower healing due to sniped heals from other classes, particularly disc priests.)
Some druids seem to be not sure how to use them – either they forget to place them or they drop them then forget about them. Pick up ShroomHelper for starters, this will show exactly how much overhealing your wild mushrooms have absorbed, and will flash at you when you reach 100%, incase you forget.
Positives for Wild Mushrooms? It gives resto druids something to do with all that overhealing from ticking rejuvenations. And with the new changes to rejuvenation costing 9% less mana (although there is some speculation that it could be a bug), druids could easily blanket the raid with nearly free rejuvs.
On the downside, it actually encourages resto druids to NOT heal with smart healing in mind, but rather just mindlessly cast rejuv over and over across the raid while occassionally tossing out a lifebloom and swiftmend – the arcane mage of the healing class so to speak. And the logs I have looked at so far, rejuv spam has gotten much worse – or better, depending on your perspective. And instead of a solution to druids getting their heals sniped, a raid blanketed entirely with rejuvs will cause the resto druids to be the new healing sniper others complain about.
Also, healing leaders might require their druids, as part of their “rotation”, to spam rejuv to get mushrooms to 100% and then use it as a raid CD. Not sure how effective this will be after only one day of raiding in 5.2, but I suspect we will see much more of mushrooms as an output CD, especially in 10M where there might be limited cooldowns. That said, I am not sure Blizzard intended their “let’s give druids something out of their overhealing” to turn into a “just spam rejuvs until your mushrooms are 100%”.
Throw into that, the resto druid t15 4pc bonus “The healing done by your Rejuvenation increases by 6% each time it causes healing” and druids are in danger of becoming rejuvenation zombies. Great for druids who love to see themselves on the top of the meters and on the top of World of Logs, but not so great for those who enjoy making on-the-fly smart choices about which heals to use when.
Regardless, wild mushrooms will definitely be worth keeping an eye on.