Queen Melancholy

Vigilance, lifelink
At the beginning of each player's upkeep, if that
player controls more creatures than another
player, they sacrifice a creature. That player does
the same for enchantments, then discards a card
if they have more cards in hand than another
player. That player creates a Treasure token for
each card put into a graveyard this way.
Equality, at any cost.