Mythic Keystone

Mythic Keystones modify the difficulty of a Mythic dungeon, turning it into a Mythic+ dungeon with added health/damage scaling and affixes.
Each keystone is attuned to a certain dungeon and upgrades it to a certain level (i.e. +2).
A player may only possess one Mythic Keystone at a time, and will only receive one per week. If the current Keystone was deleted, another one won't be available from any of the possible Keystone sources until after the weekly dungeon reset.
If it was accidentally deleted, it can be recovered through the Battle.net Item Restoration service. However, with patch 8.1.0, the keystone can no longer be deleted.
==Acquiring the Keystone==
There are three ways to obtain a Keystone:
*Complete a Mythic dungeon to receive a level 2 Keystone
*Participate in a Mythic+ dungeon using another player's Keystone to receive a Keystone
*If at least one Mythic+ dungeon has been done, open the Great Vault after a weekly dungeon reset to receive a new Keystone
*The Keystone from the Great Vault will be at the same level as the best Mythic+ dungeon you completed last week if the dungeon was in time, one level lower if it was not in time, or a Keystone Level 2, whichever is higher
==Upgrading the Keystone==
If one successfully completes a Mythic+ dungeon within the time allotted, the Keystone that was used to start the attempt will become upgraded by at least 1 level. The faster one clears the content, the larger the upgrade, up to a maximum of 3 levels higher.
*Beating the timer with less than 20% remaining (e.g. less than 6 minutes for a 30-minute dungeon) results in a +1 upgrade, e.g. from 3 to 4
*Beating the timer with more than 20%, but less than 40% remaining (e.g. less than 12 minutes, but more than 6, for a 30-minute dungeon), results in a +2 upgrade, e.g. from 3 to 5
*Beating the timer with more than 40% of the allotted time remaining (e.g. more than 12 minutes for a 30-minute dungeon) results in a +3 upgrade, e.g. from 3 to 6
At the end of the dungeon run, the upgraded Keystone will be placed in the initiating player's bag. Each time a Keystone is upgraded it will select a new dungeon at random from the set of dungeons the initiating player has access to (Cathedral of Eternal Night does not follow this rule). For example, if the player who started the run has not yet unlocked The Arcway/Court of Stars dungeons, the Keystone will only choose from the remaining valid dungeons.
==Changing a Keystone==
Completing a dungeon after the timer changes the keystone to another (random) dungeon of the same difficulty. Resetting an in-progress dungeon downgrades the keystone by one level without changing the dungeon.
An NPC near the Great Vault offers to downgrade a keystone, and at the end of each Mythic+ dungeon to change your keystone to a different random one at the same difficulty (unless yours is a higher difficulty than the dungeon just completed).
==Notes==
*An unused keystone will convert to a Golden Filigree Brush with the daily reset.
==Patch changes==
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==See also==
*Mythic Invitational Keystone
*Timeworn Keystone
==External links==
Category:Game terms