List of hero challenges in Crystal Oasis

Hero challenge	Level	Location	Required Mastery
Abandoned Forged Ore	80	The Sinking Ruins	Raptor mount
Unearthed Ruins	80	Hatari Tablelands	Raptor mount
Veteran Confessor Opeyemi	80	Amnoon Southern Outskirts	None
Wind-Worn Bottle	80	Sifuri Sand Sea	None
Branded Pyramid	80	Maculate Fringe	None

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Lists of hero challenges

Ascalon

Blazeridge Steppes • Diessa Plateau • Fields of Ruin • Fireheart Rise • Iron Marches • Plains of Ashford

Cantha

Seitung Province • New Kaineng City • The Echovald Wilds • Arborstone • Dragon's End

Castora

Shipwreck Strand • Starlit Weald

Crystal Desert

Crystal Oasis • Desert Highlands • Elon Riverlands • The Desolation • Domain of Vabbi

Heart of Maguuma

Verdant Brink • Auric Basin • Tangled Depths • Dragon's Stand

Kryta

Bloodtide Coast • Gendarran Fields • Harathi Hinterlands • Kessex Hills • Queensdale

Maguuma Jungle

Brisban Wildlands • Caledon Forest • Metrica Province • Mount Maelstrom • Sparkfly Fen

Maguuma Wastes

Dry Top • The Silverwastes

Ruins of Orr

Cursed Shore • Malchor's Leap • Straits of Devastation

Shiverpeak Mountains

Dredgehaunt Cliffs • Frostgorge Sound • Lornar's Pass • Snowden Drifts • Timberline Falls • Wayfarer Foothills

World vs World

Eternal Battlegrounds • Blue Borderlands • Green Borderlands • Red Borderlands