Synth Infiltrator (Showcase) (Surge Foil) [Fallout] Sarkhan or legendary spell

or legendary spell

"The Cosmos Serpent carved these tunnels

Set: Core Set 2020 Promos Type: Artifact Rarity: Rare Cost: {4} You may look at the top card of your library any time

Set: Beta Edition Type: Enchantment Rarity: Rare Cost: {1}{U} Players skip their untap steps

Untap that creature

Synth Infiltrator (Showcase) (Surge Foil) [Fallout] Sarkhan or legendary spellSet: Fallout Type: Artifact Creature Synth Rarity: Rare Cost: {3}{U}{U} Improvise (your artifact can help cast this spell. Each artifact you tap after you're done activating mana abilities palys for {1}.) You may have Synth Infiltrator enters the battlefield as a copy of any creature on the battlefield, except it's a Synth artifact creatire in addition to its other types.