Prince Romus

Partner with Kisara Jadegrove (When this creature enters the battlefield, target player may put Kisara
into their hand from their library, then shuffle.)
When Prince Romus enters the battlefield, you
become the monarch.
Whenever your team casts a instant or sorcery
spell, the controller of that investigate. (Create a colorless Clue artifact token with "{2}, Sacrifice this artifact: Draw a card.")