Synergistic card choices for Slay the Spire
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Synergistic card choices for Slay the Spire

Adds a relic (Bonsai Tree) to the game that offers synergistic cards at card reward screens. By clicking on the small tree in the menu, you can configure whether to start with this relic.

Bonsai image from,_1970-2007.jpg, used under Creative Commons by-sa license.

How does it work?

This mod has a predfined list of synergistic card choices. For example Blade Dance synergizes with cards that benefit from Shivs (like Accuracy) and also cards that benefit from cheap attacks (Envenom). When the card reward screen is loaded, the mod looks at all cards in the deck, as well as all your relics, to build a list of possible synergy cards. Then one of them is selected at random. The selection is weighted, so if there is more synergy with a certain card it is more likely to show up.

To not saddle you with a million Dropkicks and Underhanded Strikes, the starting cards have a very low weight.



  1. Download ModTheSpire.jar
  2. Move ModTheSpire.jar into your Slay The Spire directory. This directory is likely to be found under C:\Program Files (x86)\Steam\steamapps\common\SlayTheSpire.
  3. Create a mods folder in your Slay The Spire directory
  4. Download BaseMod.jar, and place it in the mods folder.
  5. Download SynergyRelic.jar, and place it in the mods folder.
  6. Your modded version of Slay The Spire can now be launched by double-clicking on ModTheSpire.jar
  7. This will open a mod select menu where you need to make sure that both BaseMod and SynergyRelic are checked before clicking play