Mythic+ Keystone System Explained
Mythic+ keystones are character-bound items that gate higher-difficulty dungeon runs. Each successful timed run upgrades by +1; missed timer downgrades by 1. Weekly chest awards loot tier matching your highest cleared key. Cap: +20 per week.
How keystones work
Talk to Mystic Olene at level 50+5 prestige for your first +2 keystone. Insert into the Mythic+ portal. Affixes are random per week. Successful timer + boss kill = +1 keystone, dropped at run end.
Affix system
Each key has 1-3 affixes (volcanic, sanguine, necrotic, fortified, tyrannical, bursting). Read at portal entrance. Plan rotation accordingly. New affix sets every 4 weeks; community tier-lists them.
Weekly chest mechanics
Mythic+ vault opens Tuesdays. Reward tier = highest timed key cleared the previous week. Run +10 once for +10 reward (don't need 4 +10s).
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Frequently Asked Questions
What's the highest-rewarding key for casual play?
+10. Linear loot scaling above stops at +10.
Can I push without a static group?
Up to +5 with PuGs reliably. Above that, coordination matters more than skill.
Do keystones expire?
No — but stale keys auto-delete after 28 days unused.