Every Mythic+ key in The War Within carries a stack of affixes that quietly rewrites how you pull, where you stop, and which packs you skip. Most groups wipe not because the dungeon is hard but because they pulled the way they always do and forgot what affix was active. Here is exactly how the current affix system works and how each one should change your route.

How the affix stack is built now

Since the Season 1 rework, the structure is simpler than the old four-affix tower. Every key from +2 upward carries one of two rotating group-wide affixes: Fortified or Tyrannical. At +7 a fixed seasonal affix switches on, and at +10 the second seasonal affix joins it. There is no longer a +4 weekly-rotating slot the way Shadowlands had it, so the only thing that flips week to week is Fortified versus Tyrannical.

That single flip matters more than people think. It decides whether your damage and cooldowns go into trash or into bosses, and a route that is comfortable on one week can be a death trap on the other.

Fortified vs Tyrannical: the same key, two different dungeons

Fortified weeks

Non-boss enemies have 20% more health and deal 30% more damage. Bosses are untouched. This is a trash week. Big chain-pulls become genuinely dangerous because every extra mob is hitting harder, and caster packs or anything with a frontal can chunk the group. On Fortified you pull smaller and more deliberately, you respect interrupt assignments on caster-heavy packs, and you save a defensive for the moment the tank goes below half. Bosses, by contrast, melt — don't waste your big cooldowns on them.

Tyrannical weeks

Bosses get 30% more health and deal 15% more damage; trash is normal. Now the math inverts. Trash is a speed bump, so you can pull bigger and push pace between bosses, but every boss is a real DPS check and a survivability test. This is the week to line up Bloodlust, trinkets, and personal cooldowns on the pull timer for each boss, and to actually use your route's skip lines to arrive at bosses with cooldowns up. A clean Tyrannical run is mostly about not dying to one big boss mechanic.

A practical rule: on Fortified, plan your trash; on Tyrannical, plan your bosses.

The +7 and +10 seasonal affixes

The fixed seasonal affixes are where routing creativity actually lives, because they reward or punish specific pull shapes. The exact pair changes each season, but the recurring ones behave like this:

  • Xal'atath's Bargain: Ascendant — orbs spawn and travel toward enemies; if an orb reaches a mob it empowers the pack. You assign someone to body-block or kill orbs, which means you want packs pulled into open space where orbs are easy to intercept, not jammed into a doorway.
  • Xal'atath's Bargain: Voidbound — periodically a void-empowered enemy must be CC'd or it casts a dangerous group-wide effect. This rewards classes with reliable stuns and pushes you toward smaller, controllable pulls during the window.
  • Xal'atath's Bargain: Devour / Frenzied-style affixes — punish leaving adds alive too long, so they favor tight, fast burst pulls over slow attrition.

The common thread: at +7 you adopt the one extra mechanic into your pull plan, and at +10 you are juggling two seasonal mechanics on top of Fortified-or-Tyrannical at once. That is the real difficulty jump people feel between +9 and +10, and it is almost entirely a coordination problem, not a gear problem.

How the affix changes your route, concretely

Take a corridor pack of three casters and two melee. On a normal-trash Tyrannical week you grab it on the way past and cleave it down in two globals. On a Fortified week with Ascendant active, that same pack now hits 30% harder, and an orb can empower it mid-fight — so you pull it into the open room before it, pre-assign two interrupts, and have the tank face the melee away from the squishies. Same mobs, completely different execution.

This is why copy-pasting a route from a +10 push video into your Fortified key gets people killed: those routes are usually filmed on the trash-friendly week. Always sanity-check whose affix week the route was built for.

Reading the affix before you queue

  • Check the weekly affix first, then pick which keys to push. Tyrannical is the better week to time a new personal best because trash forgiveness lets you push pace; Fortified is the better week to farm slightly lower keys for vault and crests.
  • Match the dungeon to the week. Trash-dense dungeons with brutal packs are miserable on Fortified; boss-gauntlet dungeons are the ones that bite on Tyrannical.
  • Reassign interrupts and stops every week, not just every dungeon. The affix decides whether control matters on trash or on the boss.

When a carry actually makes sense

Most weeks, the honest answer is to learn the affix and run your own keys — that is how you get better and it is free. But there are two spots where paying for a boost is a reasonable time-for-money trade. The first is the weekly vault: if you only need a specific key level cleared for your reward and you are short on time or a coordinated group, a Mythic+ carry gets the vault slot done in one run. The second is title or high-key range pushing, where the +10 double-affix coordination wall is the bottleneck and a practiced group clears it cleanly. For everything below that, the skill you build reading affixes week to week is worth more than the time saved — play it out.

The players who consistently time keys aren't pressing better buttons than you. They walked in already knowing whether this week punishes their trash or their bosses, and they shaped every pull around that one fact.