Valenti, the Brilliant Genius

Riot, Protection from Artifacts.
Ingenious support — The first Artifact or
Catastrophe spell you cast has cascade.
Robotic mirror — {3}. Create a Valenti Bot token
with the same stats as Valenti and
gains haste and "{t}: Sacrifice this card. Add {c}".
Activate this as a sorcery and only twice per turn.