Potions & Healing

The four healing potions, how auto-potion and belt auto-refill work, and the upgrades that boost them.

Healing potions are your only active mid-fight sustain. There are four tiers, all of which heal over time — never instantly — and all fire automatically from your belt when your HP drops low enough.

The four potions

Potion	Heals	Duration	Trader price
Minor Healing Potion	100 HP	8 s	100 g
Big Healing Potion	250 HP	8 s	300 g
Greater Healing Potion	500 HP	8 s	750 g
Primal Healing Potion	1000 HP	8 s	1500 g

All four use healMode: "flat" — the “Heals” column is a flat total spread evenly across the 8-second duration. A Minor potion is 100 / 8 = 12.5 HP per second before any multipliers. It is a heal-over-time (HoT), so if you take a big hit the instant after drinking, only the ticks that have elapsed have landed. Potions are bought from the Trader.

Total healing formula

When a potion fires, the engine computes:

baseHeal  = potion.healValue                                  // 100 / 250 / 500 / 1000
totalHeal = baseHeal × (1 + max(0, healingEffect))            // gear "healingEffect" stat
                     × potionPotencyMultiplier                // Bedroom upgrade (below)

duration  = max(0.5, 8 × healDurationMultiplier)              // Bedroom upgrade (below)

totalHeal is then delivered as a HoT over duration seconds. Note that shortening the duration doesn’t reduce the total healed — it makes the same total arrive faster (higher HP/s), which is strictly better for surviving spikes.

Auto-use threshold

Potions trigger automatically when your HP falls to or below a configurable fraction of max HP. The slider lives in the combat config card:

autoUseThresholdDefault = 0.45   (45%)
range                   = 0.10 – 0.90   (10% – 90%)

Raising it makes you sip earlier and more often (safer, burns more potions); lowering it waits until you’re nearly dead (fewer potions, riskier). The slider moves in 5% steps.

Auto mode — “Adjust to enemy (avoid one-shots)”

Instead of a fixed percentage you can switch the Auto-Potion card to Auto, which re-derives the threshold from the enemy you are currently facing. The contract is simple: never sit at an HP level the enemy could delete in one step.

worstStep  = enemy's worst unblocked spike   (max physical hit after your mitigation
                                              + the instant fire/cold/lightning rider
                                              after the matching resistance)
required   = worstStep / maxHP + 0.02        (AUTO_POTION_HIT_BUFFER)
threshold  = snap-up to the next 5% step, clamped to 10 % – 90 %

Details worth knowing:

The spike is the unblocked worst case — block (probabilistic) and the conditional Last Stand bonus are deliberately left out, and the elemental rider is computed off the raw physical roll because armour never shrinks it.
Poison enemies get their own budget. A poison rider stacks one 6-second DoT per landed hit, and every concurrent stack’s tick can land in the same 50 ms step as the swing. Auto mode adds stacks × per-stack tick on top of the spike, where stacks = ceil(6 s ÷ enemy attack interval).
The result is snapped up to the next selectable slider step, so the auto value is always a number you could have dialled in by hand.
If even 90% would not be safe the threshold is clamped there and the readout turns to a warning colour — that enemy can one-shot you through a full bar, which is your cue to leave.

Only one HoT can be active at a time. The next potion will not trigger until the current heal finishes ticking, even if your HP keeps falling — so a single weak potion cannot “block” by itself for long, but a long-duration potion can. This is why cutting duration (below) also improves throughput.

Belt order & auto-refill

Use order: belt slots are scanned in slot order and the first available potion is consumed. Tier does not affect use priority — whatever sits earliest in the belt goes first.
Refill: empty belt slots are refilled from your inventory at combat start, after each kill outside dungeons, and between dungeon runs. Refill prefers the highest tier first, so a Primal in your bag moves to the belt before a Minor.

See Inventory & Equipment for managing belt slots (base belt slots = 1, extended by belt gear).

Bedroom upgrades

Two Tavern Bedroom upgrades scale potions directly (each maxes at level 10):

Upgrade	Per level	At max (lvl 10)	Formula
Potion Potency	+10% heal	+100%	`potencyMult = 1 + 0.10 × level`
Heal Duration	−5% duration	−50%	`durationMult = 1 − 0.05 × level`

Potion Potency multiplies totalHeal; Heal Duration multiplies the 8-second base (floored at 0.5 s). They stack multiplicatively with the gear healingEffect stat.

Worked example

A Primal Healing Potion (1000 HP, 8 s) with Potion Potency 10 and Heal Duration 10, no healingEffect gear:

totalHeal = 1000 × (1 + 0) × (1 + 0.10 × 10) = 1000 × 2.0 = 2000 HP
duration  = max(0.5, 8 × (1 − 0.05 × 10))    = 8 × 0.5     = 4 s
throughput = 2000 / 4 = 500 HP per second

Both upgrades together turn one Primal into 2000 HP delivered in 4 seconds — double the heal at double the speed versus an unupgraded 1000-HP-over-8-s sip.

Scroll of Amnesia

Not a potion, but the other notable consumable: the Scroll of Amnesia is single-use and grants +1 skill respec charge. It drops only from dungeon bosses on repeat (post-first) clears at a 2% chance (SCROLL_OF_AMNESIA_BOSS_DROP_CHANCE = 0.02), so respec charges are a slow trickle — spend them deliberately.