Metallurgic Summonings [Kaladesh] MST103 you may destroy target creature

you may destroy target creature

When Armada Wurm enters the battlefield

Tap an untapped artifact you control: Add {U}

Set: Phyrexia: All Will Be One Type: Creature — Phyrexian Bird Rarity: Uncommon Cost: {1}{G}{U} Flying

I know just what to do

Metallurgic Summonings [Kaladesh] MST103 you may destroy target creatureSet: Kaladesh Type: Enchantment Rarity: Mythic Cost: {3}{U}{U} Whenever you cast an instant or sorcery spell, create an X X colorless Construct artifact creature token, where X is that spell's converted mana cost. {3}{U}{U}, Exile Metallurgic Summonings: Return all instant and sorcery cards from your graveyard to your hand. Activate this ability only if you control six or more artifacts.