Envoy of Envy

(Transforms from Curse of Envy)
Flying, Extort
At the beginning of each upkeep choose one:
• If a player has more life than you, each
opponent loses 5 life.
• If a player controls more creatures than you,
each opponent sacrifices a creature.
• If a player controls more lands than you, tap up
to 2 lands each opponent controls.