Why, a mana tripler, of course
Cards like Academy Manufactor, Tamiyos Journal, and Five Hundred Year Diary seem like good cards to include that specifically care about Clue tokens
Heres the best
The triggered ability that lets its controller draw a card triggers when it dies for any reason, not just when you sacrifice it during the end step
Lets start with the Deep Clue Sea Commander deck, which is one of four pre-constructed decks from the Murders at Karlov Manor set
Joining the sets inclusion of Dalmatian Puppy, Tail Wagger - which will let the player include up to 99 copies of the same card in their deck, breaking the games standard limit of three - will be at least two named dalmatians of the One Hundred and One, all of which will be amber cards