This spell can't be countered.FlyingWhenever you draw a card, Niv-Mizzet, Parun deals 1 damage to any target.Whenever a player casts an instant or sorcery spell, you draw a card.
FlyingWhenever Korvold, Fae-Cursed King enters or attacks, sacrifice another permanent.Whenever you sacrifice a permanent, put a +1/+1 counter on Korvold and draw a card.
Elves you control have ": Add ."+1: Put a +1/+1 counter on up to one target Elf. Untap it. It gains deathtouch until end of turn.0: Create a 1/1 green Elf Warrior creature token.−6: You get an emblem with "Whenever you cast an Elf spell, it gains haste until end of turn and you draw two cards."
At the beginning of the end step, if no creatures are on the battlefield, sacrifice Pyrohemia.: Pyrohemia deals 1 damage to each creature and each player.
Exile target creature you control, then return it to the battlefield under its owner's control.Rebound (If you cast this spell from your hand, exile it as it resolves. At the beginning of your next upkeep, you may cast this card from exile without paying its mana cost.)
Shadow (This creature can block or be blocked by only creatures with shadow.)If a card would be put into an opponent's graveyard from anywhere, instead exile it with a void counter on it., Sacrifice Dauthi Voidwalker: Choose an exiled card an opponent owns with a void counter on it. You may play it this turn without paying its mana cost.
Changeling (This card is every creature type.)Whenever you or a permanent you control becomes the target of a spell or ability an opponent controls, counter that spell or ability unless its controller pays .
FlyingWhenever Korvold enters or attacks, sacrifice another permanent.Whenever you sacrifice a permanent, put a +1/+1 counter on Korvold and draw a card.
Creatures you control get +1/+1 and have flying and indestructible.At the beginning of your upkeep, sacrifice a creature. If you can't, sacrifice Eldrazi Monument.
At the beginning of your end step, if you didn't activate a loyalty ability of a planeswalker this turn, you lose 2 life., : For each planeswalker you control, you may activate one of its loyalty abilities once this turn as though none of its loyalty abilities have been activated this turn.
Join forces — Starting with you, each player may pay any amount of mana. Each player searches their library for up to X basic land cards, where X is the total amount of mana paid this way, puts them onto the battlefield tapped, then shuffles.