Mizzium Mortars [Commander Legends: Battle for Baldur's Gate] SPA Vagabunda flexible Set: Kaladesh Inventions Type: Artifact

Set: Kaladesh Inventions Type: Artifact Creature — Construct Mythic Cost: {3}{G}{G} Trample When Verdurous Gearhulk enters the battlefield

Set: Portal Type: Creature — Frog Uncommon Cost: {2}{B} When Noxious Toad dies

Set: Saviors of Kamigawa Type: Sorcery Rarity: Rare Cost: {5}{R} Exile the top card of your library

I see no contradiction

Mizzium Mortars [Commander Legends: Battle for Baldur's Gate] SPA Vagabunda flexible Set: Kaladesh Inventions Type: ArtifactSet: Commander Legends: Battle for Baldur's Gate Type: Sorcery Rarity: Rare Cost: {1}{R} Mizzium Mortars deals 4 damage to target creature you don't control. Overload {3}{R}{R}{R} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")