Raid Size Optimization

Raid Size: The Helper Strategy

Flex raids generate more expected loot when more eligible players are present. If your core can carry extra players who willingly pass the items your team needs, those helpers can increase the amount of loot available to the core.

This applies to:

• The Venomous Abyss on Normal and Heroic: 10 to 30 players
• The Tidebound Grotto on Normal and Heroic: 10 to 30 players
• The Tidebound Grotto on Mythic: 15 to 25 players

The Venomous Abyss on Mythic is fixed at 20 players. There is no raid-size optimization to do there.

The Math

For regular flex-raid loot, each eligible player contributes roughly 20% of one expected boss drop. Every five players therefore add one full expected item. At sizes between those breakpoints, the extra item is a chance rather than a guarantee.

The calculator shows expected value across the selected clear. It does not mean a boss will drop 4.2 physical items. In that example, the result is normally four items with a chance at a fifth.

The percentage gain depends on the group you started with. Four helpers added to a 21-player core increase expected loot per core raider by about 19%, not a universal 25%. Use the actual setup instead of memorizing one percentage.

What Counts as a Helper

A useful loot helper is:

• eligible for loot from the boss;
• strong enough not to turn the kill into progression;
• willing to pass the agreed items;
• clear on the arrangement before joining;
• reliable enough that the extra body does not create roster chaos.

A saved character does not generate fresh loot for a boss it is no longer eligible to loot. A player who still needs half the loot table is also not a no-competition helper, even if they are happy to pass one specific item.

Be explicit. “You can roll on anything you need” and “this is a paid carry where all loot stays with the core” are both valid arrangements when everyone agrees. Problems start when the rules appear after the item drops.

Venomous Abyss

Normal and Heroic support up to 30 players, so a strong core can bring helpers during early clears. The eight-boss raid gives the strategy time to compound: one additional eligible player adds 1.6 expected drops across a full clear before usefulness and distribution are considered.

That does not make 30 players automatically best. Boss health and mechanic targets scale with the group. If extra players add wipes, slow every pull, or make assignments harder, the theoretical loot gain disappears quickly.

Use helpers on bosses the enlarged group can kill cleanly. Cut down when the fight needs tighter execution.

Tidebound Grotto

Tidebound Grotto is a one-boss Lair, which makes the decision much simpler. Normal and Heroic use the usual 10 to 30 range, while Mythic is flexible from 15 to 25.

If your group is strong enough, helpers are perfectly reasonable here, including on Mythic. The run is short and there is only one encounter to organize. Each extra eligible player adds 0.2 expected items to the Nymrissa kill, so five helpers add one expected drop.

The same condition applies: the larger group still has to kill the boss reliably. Adding bodies for one expected item is not worth turning a clean kill into an hour of wipes.

When It Is Worth It

Helpers are most attractive early in the season when:

• the core still needs many items from the raid;
• the boss is already comfortable;
• the added players are loot-eligible and genuinely passing;
• the extra setup time is small;
• the raid has a clear plan for distributing the additional drops.

They become less valuable when only one or two highly specific items remain. More boss drops are not the same as more useful boss drops.

Try the Raid Loot Simulator to see the expected regular-loot volume for your setup. Treat tier-token and special-item odds separately until their live Season 2 rates are verified.

When to Cut Helpers

• The boss stops being clean: Wipes erase the expected-loot advantage quickly.
• Mechanics become harder: More targets can mean more assignment and positioning problems.
• The helpers need the same loot: They are now additional raiders, not loot multipliers for the core.
• The item pool is nearly exhausted: Extra random drops have little chance of helping.
• The arrangement is unclear: Fix the loot rules before the pull, not after the drop.