Spirit Grafter event art, Slay the Spire 2

Spirit Grafter

Above, a cocoon is shaking and wriggling, about to burst forth!

...it stops wriggling. The cocoon ignites! What is going on?
In a flash of light and flame, a Spirit Grafter rushes into you, threatening to merge with your being to become complete.
The Spirit Grafter merges with you. The vital kindred spirit swiftly heals you up.

You are reborn.
The Spirit Grafter is easily stopped by your will.

However, it repeatedly flies into you, desperate for a host. Its strength runs out and it dissolves with a poof.

A fleeting spirit.
Individual choiceEach player picks their own

What you can obtain

Card
Metamorphosis
Skill
2
Add 3 random Attacks into your Draw Pile. They're free to play this combat.
Exhaust.
MetamorphosisChoice: Let It In
Upgrade
CardChoice: Rejection
Heal
25 HPChoice: Let It In

Where it appears

How ? rooms roll ›
Act 2Hive

What each choice does

Rejection

Lose 10 HP. Upgrade a card.

HP−10UpgradeA card
What the game says
The Spirit Grafter is easily stopped by your will.However, it repeatedly flies into you, desperate for a host. Its strength runs out and it dissolves with a poof.A fleeting spirit.

Which option to take

Rejection

Our pick
HP−10UpgradeA card
  • Rejection. A chosen upgrade for 10 HP is a standard rest site trade without the rest site.

How it plays

  • Let It In heals 25 HP and adds Metamorphosis to your deck: a 2 cost Skill that puts 3 random Attacks into your draw pile, free to play this combat, then Exhausts.
  • Rejection opens a card select, upgrades the card you choose, and then takes 10 HP that ignores Block and powers.

Changes by version

  1. 19 Mar 2026UpgradeBeta branch
    Rejection option is now "Lose 10 HP. Upgrade a card."
  2. 18 Dec 2025NumberInternal playtest
    "Let It In" option: heal HP increased from 20 to 25 and "Approach" option: no longer costs max HP to choose
    TextInternal playtest
    Spirit Grafter event "Rejection" option now lists the downside before the upside
  3. 27 Aug 2025TextInternal playtest
    Living Cocoon to Spirit Grafter
    TextInternal playtest
    Updated wording

Internal playtest notes are from before the Early Access release. Names and numbers in them can differ from the game today.

Purchase today
If you haven't bought Slay The Spire 2 yet, it's time. Support the devs, they made an amazing game.Get it on Steam