Sivriss, Nightmare Speaker + Feywild Visitor 
Synergy is a rough depiction of how well and uniquely a card pairs with a commander. Read more on the About page.
| # | Card | Synergy |
|---|---|---|
| 399 | Arcane Denial | -0.08 |
| 399 | Fellwar Stone | -0.08 |
| 403 | Mnemonic Wall | -0.09 |
| 403 | Cast Down | -0.09 |
| 403 | Oubliette | -0.09 |
| 403 | Costly Plunder | -0.09 |
| 407 | Opt | -0.1 |
| 407 | Counterspell | -0.1 |
| 407 | Ghostly Flicker | -0.1 |
| 410 | Sky Diamond | -0.11 |
| 410 | Merchant Scroll | -0.11 |
| 412 | Lórien Revealed | -0.12 |
| 413 | Ponder | -0.14 |
| 413 | Fleshbag Marauder | -0.14 |
| 415 | Pestilence | -0.15 |
| 416 | Night's Whisper | -0.2 |
| 416 | Frantic Search | -0.2 |
| 418 | Deep Analysis | -0.21 |
| 419 | Read the Bones | -0.23 |
| 420 | Preordain | -0.26 |
| 421 | Sign in Blood | -0.28 |
| 421 | Arcane Signet | -0.28 |
| 423 | Brainstorm | -0.35 |
| 424 | Dimir Signet | -0.45 |