I would say the revolver but in response to getting shot in the head you just swords their king, checkmate.

The winner’s spirit is revenant-capable, so the only thing the gun can do is assure a draw. The heart of a champion, while useful in some rites to please the gods is still mortal. So only civil victories are attainable here at least without making an ectoplasmic mess.

technically lands are colorless, plains just produce white mana

otherwise everything seems fine and legal here

It depends on what kind of deck the white player has. If it’s cheap hate bears, stax, or board wipes (all the good things in mono white, in other words), then I think they have a solid shot

its gotta be b bros got 4 rooks on the board he’s just missing the sorry piece that white has. the only chance player a has is spending all their lands on a blue eyes white dragon or smth idk i never played poker