Stoneforge Mystic (Toppers) [Double Masters] BW39 you notice how the joints

you notice how the joints fit

Set: Sun & Moon: Crimson Invasion Type: Dragon Rarity: Promo Retreat cost: Colorless

and a premium promo card of any rare or mythic rare in the set

Set: Conspiracy: Take the Crown Type: Instant Rarity: Mythic Cost: {G} Cast this spell only before the combat damage step

Set: Foreign Black Border Type: Sorcery Rarity: Common Cost: {X}{R} This spell costs {1} more to cast for each target beyond the first

Stoneforge Mystic (Toppers) [Double Masters] BW39 you notice how the jointsSet: Double Masters Type: Creature Kor Artificer Rarity: Rare Cost: {1}{W} When Stoneforge Mystic enters the battlefield, you may search your library for an Equipment card, reveal it, put it into your hand, then shuffle. {1}{W}, {T}: You may put an Equipment card from your hand onto the battlefield.