Melmetal GX (SM178) [Sun & Moon: Black Star Promos] XY124 They only specify the consequences

They only specify the consequences should you fail

Set: Grand Prix Promos Type: Artifact Rarity: Rare Cost: {0} Imprint — When Chrome Mox enters the battlefield

Set: Arena League 2004 Type: Instant Rarity: Rare Cost: {B} Open a sealed Magic booster pack

Thunian scout

Set: Portal Three Kingdoms Type: Creature — Horse Rarity: Uncommon Cost: {3}{G} Islandwalk (This creature can't be blocked as long as defending player controls an Island

Melmetal GX (SM178) [Sun & Moon: Black Star Promos] XY124 They only specify the consequencesSet: Sun & Moon: Black Star Promos Type: Metal Rarity: Black Star Promo Retreat cost: Colorless,Colorless,Colorless,Colorless