Horrid Shadowspinner 
Synergy is a rough depiction of how well and uniquely a card pairs with a commander. Read more on the About page.
| # | Card | Synergy |
|---|---|---|
| 697 | Mana Leak | -0.16 |
| 702 | Cast Down | -0.17 |
| 702 | Arcane Denial | -0.17 |
| 702 | Commander's Sphere | -0.17 |
| 705 | Dimir Infiltrator | -0.18 |
| 706 | Dark Ritual | -0.19 |
| 707 | Night's Whisper | -0.22 |
| 708 | Opt | -0.25 |
| 709 | Deadly Dispute | -0.31 |
| 710 | Sign in Blood | -0.33 |
| 711 | Brainstorm | -0.34 |
| 712 | Ponder | -0.35 |
| 713 | Preordain | -0.4 |