Caged Sun (Retro Schematic) (Serialized) [The Brothers' War Retro Artifacts] Xyz/Effect Monster plus 121 copies of something

plus 121 copies of something new and surprising—R&D Playtest cards you won't find anywhere outside of Mystery Booster: Convention Edition

Set: Year of the Tiger 2022 Type: Artifact Rarity: Rare Cost: {3} As Herald's Horn enters the battlefield

If Summoned this way

if you have a card in your pitch zone with cost [3 Resource] or greater

while remaining flexible at the binding for ease of use

Caged Sun (Retro Schematic) (Serialized) [The Brothers' War Retro Artifacts] Xyz/Effect Monster plus 121 copies of somethingSet: 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.