Caged Sun (Retro Schematic) (Serialized) [The Brothers' War Retro Artifacts] Windgrace and betting mat

and betting mat

000 Type: Creature — Tyranid Rarity: Rare Cost: {X}{1}{G} Ravenous (This creature enters the battlefield with X +1/+1 counters on it

this one is working against you

Marbling and colors match the Plains (white)

From Everfrost to Bellsong

Caged Sun (Retro Schematic) (Serialized) [The Brothers' War Retro Artifacts] Windgrace and betting matSet: The Brothers' War Retro Artifacts Type: Artifact Rarity: Mythic Cost: {6} As Caged Sun enters the battlefield, choose a color. Creatures you control of the chosen color get +1 +1. Whenever a land's ability causes you to add one or more mana of the chosen color, add one additional mana of that color.