Abraxos, Wyvern Survivor

Partner with Manon, Blackbeak Heir (When this creature enters the battlefield target player may put
Manon, Blackbeak Heir into their hand from their library, then shuffle).
If King Dorian I of Adarlan is your commander, wyverns you control and in your hand, library,
and graveyard are black and all coloured mana
costs to cast them must be paid with {b} instead. Wyverns count as black when determining their
colour identity.