Boros Challenger 
Synergy is a rough depiction of how well and uniquely a card pairs with a commander. Read more on the About page.
| # | Card | Synergy |
|---|---|---|
| 189 | Ancestors' Aid | 0.16 |
| 189 | Attended Knight | 0.16 |
| 203 | Inspiring Overseer | 0.15 |
| 203 | Pilgrim's Eye | 0.15 |
| 203 | Sky Crier | 0.15 |
| 203 | Cave of Temptation | 0.15 |
| 203 | Mountain | 0.15 |
| 203 | Gingerbrute | 0.15 |
| 203 | Light of Hope | 0.15 |
| 203 | Kor Halberd | 0.15 |
| 203 | Cliffhaven Kitesail | 0.15 |
| 203 | Helpful Hunter | 0.15 |
| 203 | Warded Battlements | 0.15 |
| 203 | Recruit the Worthy | 0.15 |
| 215 | Skyscanner | 0.14 |
| 215 | Lightning Strike | 0.14 |
| 215 | Crystal Grotto | 0.14 |
| 218 | Forbidden Friendship | 0.13 |
| 218 | Captain's Call | 0.13 |
| 218 | Springleaf Drum | 0.13 |
| 218 | Big Score | 0.13 |
| 218 | Goldhound | 0.13 |
| 218 | Gather the Townsfolk | 0.13 |
| 218 | Mana Tithe | 0.13 |
| 218 | Emrakul's Hatcher | 0.13 |