Yidaro, Wandering Monster As a commander, Yidaro, Wandering Monster isnt as great because you can't cycle it from the command zone, but it's a very neat addition as a part of the deck because it's a free cantrip that cant be countered
Or just take infinite turns with thopter foundry and time sieve
There's a certain joy in constructing a deck from scratch, then watching all of your hard work unfold when the deck works collectively as one unstoppable force
Smaug the Magnificent creates Treasure every turn and turns them into damage when it attacks
Each player sacrifices all permanents that are rare or mythic rare, then each player reveals their hand and discards all cards that are rare or mythic rare
Urabrask, the red praetor, doesn't cooperate with the others, so he wasn't involved in the process