Vth Usk, Chaos Caller

At the beginning of each player's upkeep, that player chooses one of the following effects. They cannot choose an effect they've already chosen this game. If a player runs out of options, that player instead loses 10 life at their upkeep.
-Draw 2 cards.
-Reveal the top card of your library. If it's an instant or sorcery spell, cast it without paying its mana cost.
-Deal 5 damage to target creature.
-Discard a card.
-Sacrifice a creature.