The Witch
Updated! Now it correctly works for slay the spire v2.1 (07-30-2020)!
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The Witch character mod features 75+ new cards and 4 new relics. Her main theme is Curses: her starting relic (Black Cat) adds a temporary random curse to the draw pile at the beginning of each combat, but grants 1 energy everytime you draw a curse. This means that adding a curse to the deck is not always a bad thing, and many other cards in her set interact with curses in interesting ways.
This mod source code is available at https://github.com/gygrazok/witchmod