New Class And Spell Changes Datamined on Phase 4 PTR - Season of Discovery

wowhead.com:

With Blizzard updating the WoW Classic PTR to include further updates coming in Phase 4 of Season of Discovery, we've begun datamining all the new class and spell changes!

WoW Classic Season of Discovery SoD Phase 4 Overview

Talents (1)

• Transforms the Druid into Moonkin Form. While in this form the armor contribution from items is increased by 360%
  S03 — Tuning and Overrides Passive — Druid
  Moonfire costs 50% less mana and deals 50% more damage over time, your periodic damage spells can deal critical periodic damage, you gain (60 * 2) spell damage
  and all party members within 30 yards have their spell critical chance increased by 3%.
  S03 — Tuning and Overrides Passive — Druid
  The Moonkin cannot cast healing spells while shapeshifted
  The Moonkin can only cast Balance spells while shapeshifted.
  The act of shapeshifting frees the caster of Polymorph and Movement Impairing effects.
  

Talents (5)

• Increases the critical effect chance of your Regrowth spell by 10%.
  Duration changed from -1 ms to 0 ms
• Increases the critical effect chance of your Regrowth spell by 20%.
  Duration changed from -1 ms to 0 ms
• Increases the critical effect chance of your Regrowth spell by 30%.
  Duration changed from -1 ms to 0 ms
• Increases the critical effect chance of your Regrowth spell by 40%.
  Duration changed from -1 ms to 0 ms
• Increases the critical effect chance of your Regrowth spell by 50%.
  Duration changed from -1 ms to 0 ms

Rune Engraving (4)

• Engrave your belt with the Nourish rune:
  
  Heals a friendly target for \ to \. Heals for an additional 20% if you have a Rejuvenation, Regrowth, Lifebloom, or Wild Growth effect active on the target. This spell benefits from and triggers all effects associated with Healing Touch or Regrowth.
  
• Engrave your boots with the Dreamstate rune:
  
  Your damaging non-periodic spell critical strikes grant you 50% of your mana regeneration while casting for 8 sec and increase Nature