From the official Japanese Twitter account, the first colorless Digimon, originally revealed in V Jump magazine.

Card Number | BT1-084 | Level | 7 |
Card Type | Digimon | Play Cost | 15 |
Color | Colorless | Evolution Cost | 6 (Red & Blue) |
Digimon Type | Holy Knight/Royal Knight | DP | 15000 |
Attribute | Vaccine | Rarity | Super Rare |
Stage | Ultimate | Artist | sasasi |
Main Effect | [On-evolution] Choose 1 of your opponent’s Digimon. Destroy that Digimon and all of your opponent’s Digimon with the same name as it. [When it attacks] By returning 1 Level 6 Digimon from this Digimon’s Evolution Sources to your hand, you may make it Active. |
Source Effect | — |
Booster 1 will launch in Japan May 15th, 2020.