It may be April Fool's Day today, but this is no joke: The Plane of Mischief received a surprise update today - a quasi-reversion to its long-past state (more), bringing back a few old quests. Some original NPCs don't appear to be present and the respawn timer is reportedly different from that of its original version, so this may have been a manual update rather than a full-on reversion.

Update, April 2: The zone is now back in its regular form.

New Items: Heroic Incarnadine Gemstone ;  Heroic Lump of Felsic Lava ;  Heroic Flame Alchemist's Jewel ;  Heroic Rock Guardian Shard ;  Heroic Eye of the Serpent

Updated Items: Helm of Manifested Ether ;  Spell: Nurturing Growth Rk. II ;  Tome: Holdout Blade Rk. II ;  Tome: Conditioned Reflexes Rk. II ;  Spell: Splash of Pyroxene Rk. II ;  Stone of Tranquility ;  Song: Brusco's Burning Call Rk. II ;  Tome: Reflex Rk. II ;  Gloves of Latent Ether ;  Fine Feathers ;  Bracer of Latent Ether ;  Tome: Monkey's Spirit Discipline Rk. II ;  Spell: Remote Moonfire Rk. II

Updated Achievement: Achievement: Hunter of Crystal Caverns, Fragment of Fear

Updated Bestiary: an assassin protector ;  General Jared Blaystich ;  Watchman Sayure ;  A Ry`Gorr Inspector ;  Gelden ;  Doomscale Cult Coffers ;  a rageblind slasher ;  a cliknar enslaver ;  a slow charger ;  Engineer Friliim ;  Commander Kurt Ellis