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 |
|---|---|---|
| 620 | Snow-Covered Island | -0.1 |
| 627 | Sky Diamond | -0.11 |
| 627 | Compulsive Research | -0.11 |
| 627 | Dimir Signet | -0.11 |
| 630 | Spell Pierce | -0.12 |
| 630 | Dispel | -0.12 |
| 632 | Thorn of the Black Rose | -0.13 |
| 632 | Cast Down | -0.13 |
| 632 | Charcoal Diamond | -0.13 |
| 632 | Feign Death | -0.13 |
| 636 | Fleshbag Marauder | -0.14 |
| 636 | Consider | -0.14 |
| 636 | Impulse | -0.14 |
| 636 | Falkenrath Noble | -0.14 |
| 636 | Mana Leak | -0.14 |
| 641 | Bonder's Ornament | -0.16 |
| 642 | Syphon Mind | -0.17 |
| 642 | Commander's Sphere | -0.17 |
| 644 | Dark Ritual | -0.18 |
| 644 | Snap | -0.18 |
| 646 | Dimir Infiltrator | -0.19 |
| 647 | Opt | -0.24 |
| 648 | Night's Whisper | -0.29 |
| 649 | Brainstorm | -0.3 |
| 649 | Arcane Denial | -0.3 |
| 651 | Ponder | -0.32 |
| 651 | Deadly Dispute | -0.32 |
| 653 | Preordain | -0.39 |