| d% | Challenge |
| 01–04 | Aberrant mutation |
| 05–08 | Challenging construction |
| 09–12 | Contradictory instructions |
| 13–16 | Cryptic cross-reference |
| 17–20 | Distracting visitor |
| 21–24 | Emotion requirement |
| 25–28 | Energy overload |
| 29–32 | Enticing offer |
| 33–36 | Fragile components |
| 37–40 | Historic stumbling block |
| 41–44 | Illegal ingredients |
| 45–48 | Infested ingredients |
| 49–52 | Ingredients develop quasi-sentience |
| 53–56 | Intrusive spirit |
| 57–60 | Ley line convergence |
| 61–64 | Magical resonance |
| 65–68 | Planar peculiarity |
| 69–72 | Rare reference |
| 73–76 | Reagent shortage |
| 77–80 | Regal requisite |
| 81–84 | Sesquipedalian elucidation |
| 85–88 | Structural flaw |
| 89–92 | Sudden inspiration |
| 93–100 | Class-specific challenge |