Mythic +

This guide explains the new Mythic+ changes observed in the Midnight beta, focusing on the Great Vault, the new crest upgrade system, and what this realistically means for players.

⚠️ Note: These changes are not yet officially confirmed by Blizzard and are based on what is currently visible in the beta.

What’s Changing in the Mythic+ Great Vault

In Midnight, the Mythic+ Great Vault no longer caps at +10. Vault rewards now scale all the way up to +18, adding meaningful progression beyond current limits.

Observed Vault progression:

• +10 / +11 → Mid Track 1/6
• +12 / +13 / +14 → Mid Track 2/6
• +15 / +16 / +17 → Mid Track 3/6
• +18 → Mid Track 4/6 (282 item level)

This represents seven additional levels of progression compared to The War Within.

What Does NOT Change

Despite the new scaling, several core rules remain the same:

• The Great Vault still rewards one item per week
• Rewards remain Myth Track gear
• Mythic+ dungeons still do not drop gear at the end of the run
• Only the starting upgrade level of the Vault item changes

New Crest Upgrade System

The upgrade system has been fully reworked and now uses progressive crest costs across all gear tracks.

Upgrade costs per level:

• 1 → 2: 10 crests
• 2 → 3: 20 crests
• 3 → 4: 30 crests
• 4 → 5: 40 crests
• 5 → 6: 50 crests

Total cost to fully upgrade a piece from 1/6 to 6/6 is now 150 crests (previously 75).

Upgrade Strategy Implications

This change strongly affects how players should approach gearing:

• Upgrading multiple items at lower ranks (1–3) is far more efficient
• Final upgrades (4–6) are extremely expensive
• Loot quantity now matters more than pushing a single item to max early

Why +18 Keys Matter So Much

Completing a +18 key grants a Vault item starting at Mid Track 4/6, which:

• Saves 60 crests per week
• Avoids paying the 1→2, 2→3, and 3→4 upgrade costs

With the new 100 weekly crest cap, this discount is extremely valuable.

Limitations of the Vault Advantage

The benefit is not guaranteed:

• It only matters if the Vault item is actually usable
• Mythic raiders gain less value due to raid-based Vault rewards
• A bad Vault roll can effectively waste the crest savings

Realistic Difficulty of +18 Keys

+18 keys are not intended to be weekly farm content, especially early in the season.

• Beta testing occurs with inflated item levels, tier sets, and best-in-slot trinkets
• On live servers, players will enter Mythic+ around 240–245 item level
• Tier sets and optimal gear will not be immediately available

As a result, completing +18 keys will be out of reach for the vast majority of players in the first weeks.

End-of-Season Goal, Not a Routine

+18 keys are designed to be:

• A high-skill milestone
• Comparable to top-end keys (18–20) in early The War Within
• Achievable by dedicated groups, not the average player base

Why This Change Is a Positive One

This update finally gives Mythic+ players:

• A clear incentive to push higher keys
• A tangible reward beyond score and achievements
• A reason to progress past the traditional +10/+12 stopping point

It addresses a long-standing criticism that Mythic+ lacked meaningful rewards at higher difficulty.