Patch Guide

Slay the Spire 2 V101 Relic Changes

This page tracks the live V101 relic updates that matter in actual runs: the Pendulum rewrite, the Tiny Mailbox buff, the rarity swaps, the free-to-play wording cleanup, and the site pages that now reflect the new lines.

March 26, 2026Patch date
9Unique relics covered
6Rarity shifts
4Sections

Pendulum leaves shuffle loops and turns into a clean every-third-turn draw relic.

Tiny Mailbox now pays out two potions on Rest and moves up a rarity tier.

Vexing Puzzlebox and Crossbow now use the cleaner free-to-play wording, and Puzzlebox only grants that window for the current turn.

1. Mechanic changes

Three relics changed how they create value

These are the updates that affect real turn planning. The text box changed because the job changed, not because the line was polished.

Pendulum relic icon
Shared PoolCommonDeck FlowEngine rewrite

Pendulum

Before

Whenever you shuffle your Draw Pile, draw 1 card.

Now

Every 3 turns, draw 1 card.

Pendulum stops being a shuffle payoff and becomes a steady cadence relic. Short-deck loops lose a high-roll engine, while slower shells get a predictable extra draw every cycle.

Current text: Every 3 turns, draw 1 card.

Tiny Mailbox relic icon
Shared PoolUncommonResourceRest reward buff

Tiny Mailbox

Before

Whenever you Rest, procure 1 random potion.

Now

Whenever you Rest, procure 2 random potions.

The relic is no longer a minor side perk. Two potions can turn one campfire into a real route pivot, especially when the next elite or boss asks for bottle quality more than raw deck strength.

Current text: Whenever you Rest, procure 2 random potions.

Vexing Puzzlebox relic icon
Shared PoolRareResourceFree window tightened

Vexing Puzzlebox

Before

At the start of each combat, add a random card into your Hand. It costs 0 Energy.

Now

At the start of each combat, add a random card into your Hand. It is free to play this turn.

The relic still gives tempo, but it no longer lets you bank the card and cash the discount later. The value now lives in immediate turn-one conversion instead of delayed setup.

Current text: At the start of each combat, add a random card into your Hand. It's free to play this turn.

2. Rarity shifts

Six relics moved to a different rarity bucket

The effects did not all change here, but the draft signal did. Rarity is a routing and expectation tool, so these moves matter even when the rule text stays put.

Tiny Mailbox relic icon
Shared PoolUncommonResourceMoved up

Tiny Mailbox

Before

Rarity: Common.

Now

Rarity: Uncommon.

This makes sense after the buff. Two potions on Rest is no longer generic filler power.

Current text: Whenever you Rest, procure 2 random potions.

Permafrost relic icon
Shared PoolUncommonAttackMoved up

Permafrost

Before

Rarity: Common.

Now

Rarity: Uncommon.

Permafrost already asks a more specific deckbuilding question than a typical common relic, and the new bucket reflects that.

Current text: The first time you play a Power each combat, gain 7 Block.

Bag of Marbles relic icon
Shared PoolCommonAttackMoved down

Bag of Marbles

Before

Rarity: Uncommon.

Now

Rarity: Common.

The effect is simple, front-loaded, and broadly useful. That is exactly what the common bucket is for.

Current text: At the start of each combat, apply 1 Vulnerable to ALL enemies.

Red Mask relic icon
Shared PoolCommonAttackMoved down

Red Mask

Before

Rarity: Uncommon.

Now

Rarity: Common.

Like Bag of Marbles, this is a straightforward opener relic. The lower rarity lines up with how often it is cleanly useful.

Current text: At the start of each combat, apply 1 Weak to ALL enemies.

Bellows relic icon
Shared PoolRareDeck FlowMoved up

Bellows

Before

Rarity: Uncommon.

Now

Rarity: Rare.

Upgrading the first hand each combat creates a bigger opening spike than an Uncommon slot usually implies, especially in decks with premium turn-one cards.

Current text: The first Hand you draw each combat is Upgraded.

Lasting Candy relic icon
Event PoolUncommonAttackMoved down

Lasting Candy

Before

Rarity: Rare.

Now

Rarity: Uncommon.

The relic still matters, but it is no longer being sold as a top-end rarity payoff. That matches its every-other-combat cadence.

Current text: Every other combat, your card rewards gain an additional Power.

3. Text cleanup

Two relics now use cleaner free-to-play wording

These are wording changes, but wording is not cosmetic when players are reading cost windows mid-combat. Cleaner language removes the wrong read before it starts.

Crossbow relic icon
Event PoolAncientAttackText cleanup

Crossbow

Before

At the start of your turn, add a random Attack into your Hand. It costs 0 Energy this turn.

Now

At the start of your turn, add a random Attack into your Hand. It is free to play this turn.

The practical effect is the same, but the line reads more cleanly and avoids cost-language clutter when you only care about whether the generated attack is playable now.

Current text: At the start of your turn, add a random Attack into your Hand. It's free to play this turn.

Vexing Puzzlebox relic icon
Shared PoolRareResourceText cleanup + rule clamp

Vexing Puzzlebox

Before

At the start of each combat, add a random card into your Hand. It costs 0 Energy.

Now

At the start of each combat, add a random card into your Hand. It is free to play this turn.

This wording update matters because the relic also loses any hint of a lasting discount. The card is only free in the turn it appears.

Current text: At the start of each combat, add a random card into your Hand. It's free to play this turn.

4. Site sync

Where the update now lands on the site

Patch coverage is only useful if the surrounding relic pages are not stale. These pages now carry the V101 follow-through that matters for the changes above.