Korvold is a great choice for anyone that wants to sacrifice their own stuff, and for me, is one of the best commander cards mtg has to offer for aristocrats lovers
Yawgmoth is the glue that holds this deck together and singlehandedly makes it playable
The biggest knock against it, besides the price tag, is how quickly friendships end from the repeated dO yOu PaY tHe OnE? That is a very legitimate reason that some players choose to skip it, but if youre strictly looking at power level, Rhystic Study is hard to beat
In Japanese sets, the UR symbol denotes Ultra Rare cards, but in English sets, Hyper Rare cards are rarer and more valuable than Ultra Rare ones
While that does require tapping, it is mana free, and a nice card boost, mana boost, life loss for your foe, and more
4: For each player, choose a creature that player controls