Boon offer odds
Which boons will this pickup offer, and at what rarity? Set up your run and read the exact odds for every boon.
How this works: every branch of the game's own offer procedure walked through exactly (core-boon rule, linked boons, rarity rolls, prerequisites, exchanges, the last-resort fill) and checked branch for branch against the game's code. Base rolls before bonuses: Rare 10%, Epic 5.0%, Duo 12%, Legendary 10%.
Your pickup
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How a pickup picks its boons
- Once you've done 2 runs, 1 in 10 offers starts with an exchange: one of the god's core boons for a slot you already filled, one rarity higher (a Heroic slot can't be exchanged).
- Until you hold one of the god's core boons (Attack, Special, Cast, Sprint, Magick) or the slot is taken, the offer is up to three core boons, and if none of them is an Attack or Special, one is swapped for one; after that, at most one core boon appears.
- Each choice rolls Rare, Epic, Duo and Legendary in that order, each roll on its own; the last roll that succeeds is the rarity. Only rarities the boon has are rolled.
- Duo and Legendary boons join the pool once their prerequisites are met; boons you hold are excluded; hammers are always Common and depend on your weapon and aspect.
- If fewer than three boons are left, the offer fills with exchanges and then any remaining boon at its highest rarity, unless the Vow of Forsaking is on.
The full rules and what isn't modelled: see the methodology.