The Emerald Dream grants a benefit which varies by your combat specialization.
Balance Lunar Peak and Solar Peak also cause your Moonfire and Sunfire to heal an injured ally for (300% of Spell power).
Feral Increases healing from Healing Touch and Rejuvenation by 20%. Your Healing Touch and Rejuvenation also heal you when used to heal someone else.
Guardian Increases healing from Healing Touch by 20%, increases the critical strike chance of Mangle by 10%, and your Mangle critical strikes have a 40% chance to make your next Healing Touch or Rebirth instant, free, and castable in all forms, and to benefit from Attack Power instead of Spell Power.
Restoration Increases Wrath damage by 20% and your Wrath spell causes a nearby ally to be healed for 150% of the damage done.
Balance: The talent has been redesigned for Balance Druids and now causes Moonfire and Sunfire casts with Lunar or Solar Peak to also heal a random injured ally.
Feral: Increases the healing of Healing Touch and Rejuvenation by 20%, and causes them to also heal the Druid when cast on allies.
Hotfix (2013-10-21):The Dream of Cenarius effect is now removed when the Druid switches talents.