You set a dungeon on Mythic difficulty and enter the dungeon through the dungeon entrance (not Dungeon Finder). Meaning, you need to gather a premade party of 5 yourself or join a party. Best way to find or create one is via the Group Finder in game and click on Premade Groups/Dungeons.
When entering the Mythic Dungeon, you will see a Challenger’s Pedestal. This pole regulates the Mythic plus. If you leave it alone it will be a regular Mythic run. Think of Mythic plus as an upgraded version of Challenge mode.
Completing a Regular Mythic dungeon will reward you with a key. This key will let you do the same Mythic dungeon on level 2 difficulty (1+).
When completing the mythic 1+ (2nd difficulty) in a certain time, your keystone will upgrade to next level, which is level 3 (+2) and so on and so forth. Each dungeon has its own time point to be able to upgrade your keystone.
How does Mythic plus difficulty workFor each keystone, the difficulty change so that all enemies will increase their health and damage by 9%.
At certain levels, affixes will be implemented. Affixes are extra buffs on enemies and debuffs on players to make it harder. These affixes will not be the same all the time. Instead, the affixes will change every weekly reset.
At the moment, there are 10 Affixes. When reaching level 7 they will come in pairs.
At level 4 (+3 Keystone)Bolstering - Non-boss enemies will buff nearby allies' health and damage when defeated.
Raging - Non-boss enemies will enrage at low health, dealing double damage until killed.
Sanguine – Shortly after death, non-boss enemies will leave a pool of blood on the ground, which grows to a 5yd radius over 2 seconds. This pool heals enemies and damages players for a % of their maximum health.
Teeming - Additional non-boss enemies are present throughout the dungeon; kill count requirement increased.
At level 7 (+8 Keystone)Decay - All players suffer damage over time while the challenge is active.
Necrotic - Enemy melee attacks apply a stacking debuff that deals damage and reduces healing received.
Skittish - Tanks generate much less threat.
Volcanic - Enemies cause eruptions of flame beneath the feet of distant players.
At level 10 (+9 Keystone)Fortified - Non-bosses have significantly more health and damage
Tyrannical - Bosses have significantly more health and damage.
Level Mythic modeExtra AffixesHealth and damage
increase (approx) Level 1 +0No Level 2+1 KeystoneNo9%Level 3 +2 KeystoneNo17%Level 4 +3 KeystoneYes (1 Affix)26%Level 5 +4 KeystoneNo36%Level 6 +5 KeystoneNo45%Level 7 +6 KeystoneYes (2 Affixes)59%Level 8 +7 KeystoneNo71%Level 9 +8 KeystoneNo85%Level 10 +9 KeystoneYes (2 Affixes)100%
How does the loot system on Mythic plus workThe gear in mythic plus is 845 with the chance of getting titanforged/Warforged/gemmed gear. This loot is not from bosses (from level 2), it is from a chest in the end of the dungeon.
The main reward from mythic dungeons is not the chest at the end of the dungeon, it is the weekly chestyou get.
Weekly chest rewardAt every weekly reset, you will get a chest in your class order hall that contains a gear item reflecting the highest Mythic level you completed during the prior week, up to a maximum of item level 880 for a successful Mythic Level 10 clear.
Level 1 Regular Mythic 845 ilvl
Level 2 +1 Keystone ilvl
Level 3 +2 Keystone ilvl
Level 4 +3 Keystone ilvl
Level 5 +4 Keystone ilvl
Level 6 +5 Keystone ilvl
Level 7 +6 Keystone ilvl
Level 8 +7 Keystone ilvl
Level 9 +8 Keystone ilvl
Level 10 +9 Keystone 880 ilvl
If you complete a mythic plus dungeon but not in timeIf you have a keystone on you (depleted or not) you will not get another one at the end of the dungeon.
If you complete a mythic plus dungeon in timeYou will get a keystone that is one level higher than the level you completed (if you used your keystone).
If you didnt use your keystone, it will not get upgraded.
Will I get 100% loot at the end of the dungeonThe minimum amount of chests is 1 at the end of the dungeon.
The faster you complete a dungeon the more chests you get in the end of the dungeon.
Each chest contains 2 gear items.
Latest news/Updates/changes regarding Mythic plus
From Wow Home page 20160914Mythic Keystone RewardsWhile creatures do not drop loot normally during a Mythic Keystone run, upon completion of the run, players will find a chest containing two high-quality items for the party. The base item level of these rewards starts at item level 845 for Mythic Level 2, and goes all the way up to item level 865 for a Mythic Level 10.Please note: the end-of-dungeon reward quality will be capped at a base item level of 850 during the first week of the feature’s availibility, with the full range of rewards unlocking once Mythic raids have opened the following week.Like most end-game loot in Legion, these items also have a chance to be Warforged or Titanforged, allowing them to potentially scale all the way up to item level 895.After completing any Mythic Keystone dungeon within the time limit (whether using your own Keystone or someone else’s), a reward chest will be available in your Class Hall the following week. That chest contains a guaranteed piece of gear with a power level reflecting the highest Mythic level you completed during the prior week, up to a maximum of item level 880 for a successful Mythic Level 10 clear. It will also contain a new Mythic Keystone for you, which allows you to jump right back into your weekly Mythic dungeon adventures.
From Wow Home page 20161003We’re deploying a hotfix as soon as possible that will change some of the contents of the chests at the end of Mythic Keystone dungeon runs:- The Artifact Power contained in Challenger’s Cache awarded for completing a given difficulty will now contain increasing amounts of Artifact Power depending on the difficulty cleared.
- Prior to the hotfix, this Cache contained 400 base (pre-Knowledge-modifier) Artifact Power. After the hotfix:
- Mythic 2-3: 500 base Artifact Power
- Mythic 4-6: 800 base Artifact Power
- Mythic 7-9: 1000 base Artifact Power
- Mythic 10+: 1200 base Artifact Power
- At the same time, any additional (bonus) chests awarded for beating the Mythic Keystone timer by a very large amount will no longer contain any Artifact Power. They will still contain items of the appropriate power level, as before.
- All Challenger’s Caches will now also contain gold.
The bonus chests you receive when you dominate a dungeon so thoroughly that your Keystone upgrades multiple times are intended to make sure that you don’t miss out on loot. You shouldn’t feel like it’s a mistake to blow away the timer. However, Artifact Power is available in nearly every type of endgame content, so your other reward for going faster is time saved, and that time could be spent pursuing more Artifact Power from its many other sources.
These changes are aimed at aligning the efficiency of the different tiers of difficulty, so that a well-geared group of dungeon experts is rewarded more for tackling a high-level Mythic dungeon, rather than incentivized to stomp an entry-level dungeon.So what is the max level on Mythic plus?Well, so far there is an "Achievement" to unlock an appearance on artifact weapon by completing a level 15 keystone.