May 31, 2026 · 5 min
Hero Slots: Party Size Through Runes
Unlocking classes is not the same as deploying more heroes — slots come from the Rune Tree.
How Slots Unlock
From Rune of War, path downward to Rune of Command nodes. Each Command rune adds a deployable hero slot. The third slot costs roughly 150,000 gold total along the path.
- 1
Reach level 3
Unlock Runes menu.
- 2
Buy Command runes
Fund with Cube Alchemy gold.
- 3
Formation menu
Assign unlocked classes to open slots.
Common Mistakes
- Buying Hunter DLC expecting a fourth slot at once — DLC is a class, not a slot.
- Unlocking a class but not deploying it in Formation.
- Spending gold on synthesis while second slot is still locked.
Related guides
Rune Tree: Core Progression Engine
The Rune Tree unlocks party size, automation, inventory, and offline rewards — not just stats.
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Starter Classes: Knight vs Ranger
Six classes exist; Priest DLC is free and changes the early meta. Here is how to choose and when paid DLC matters.
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Beginner Roadmap: Your First 10 Hours
A milestone checklist from install to your third hero slot — built around what new players actually get stuck on.
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