Pay Tribute

At the beginning of each of your opponents upkeep, they must sacrifice a permanent, if they can’t they lose the game. Whatever option they chose, you also gain the benefit.
If it was a land, they may search their library for a basic land, put it into the battlefield tapped.
If it was a creature, they may put a +1/+1 on target creature.
If it was an enchantment, they may draw a card.
If it was an artifact, they may gain 2 life.