Sivriss, Nightmare Speaker + Criminal Past 
Synergy is a rough depiction of how well and uniquely a card pairs with a commander. Read more on the About page.
| # | Card | Synergy |
|---|---|---|
| 1 | Summon Undead | 0.96 |
| 2 | Unseal the Necropolis | 0.71 |
| 3 | Corpse Churn | 0.61 |
| 3 | Dread Return | 0.61 |
| 3 | Scaretiller | 0.61 |
| 6 | Charcoal Diamond | 0.53 |
| 7 | Black Cat | 0.49 |
| 8 | Grim Discovery | 0.48 |
| 8 | Blood Beckoning | 0.48 |
| 8 | Stir the Grave | 0.48 |
| 8 | Scurrilous Sentry | 0.48 |
| 8 | Scrapwork Rager | 0.48 |
| 13 | Haunt of the Dead Marshes | 0.47 |
| 13 | Eerie Soultender | 0.47 |
| 13 | Retrofitted Transmogrant | 0.47 |
| 13 | Dig Up the Body | 0.47 |
| 13 | Driver of the Dead | 0.47 |
| 18 | Writhing Necromass | 0.46 |
| 18 | Funeral Rites | 0.46 |
| 18 | Forever Young | 0.46 |
| 18 | Voracious Vermin | 0.46 |
| 22 | Gixian Infiltrator | 0.45 |
| 22 | Prized Statue | 0.45 |
| 24 | Sanitarium Skeleton | 0.44 |
| 25 | Tocasia's Dig Site | 0.43 |