You can actually decline or delay picking a spell by clicking the X on the top right of the spell UI.
The old “0 anima reward” issue is fixed now — instead, if you have unused base choose counts from a milestone boss, you get a 20% anima boost per unused count.
The progress bar under your stage number now shows how far you are from the next milestone.
Basic game loop: pick a spell → push to higher stage → sleep (rebirth) → earn anima (sleep currency) → buy meta upgrades → push further next run.
Spells are passive multipliers:
Flat Multiplier – e.g. 3× stamina.
On Kill Gain – +1 stat per kill (resets when you sleep).
Scale – trade half one stat for a boost in another.