Byvyb, Lord of Balance

Vigilance
Whenever Byvyb, Lord of Balance deals combat
damage to a player, each player chooses a number
of lands they control equal to the number of
lands controlled by the player who controls the
fewest, then sacrifices the rest. Players discard
cards and sacrifice creatures the same way.

"He wields no blade, just a scale, that he may
rightfully choose his enemies."