The next time you would lose the game this turn, instead draw seven cards and your life total becomes 1.
Exile Stunning Reversal.

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.)

Whenever you cast a spell you don't own, create a 3/3 black Demon creature token.
+1: Draw a card. For each opponent, exile up to one target instant or sorcery card from that player's graveyard and put a page counter on it.
−3: You may cast a spell from among cards in exile with page counters on them without paying its mana cost.
Tasha, the Witch Queen can be your commander.

: Add .
: Return target legendary creature to its owner's hand.

Search your library for a card, put that card into your hand, discard a card at random, then shuffle.

Whenever a permanent becomes untapped, that permanent's controller mills a card.

Flying, trample
Whenever one or more opponents each lose exactly 1 life, put a +1/+1 counter on Ob Nixilis. Exile the top card of your library. Until your next end step, you may play that card.

Whenever a creature dies, put a charge counter on this enchantment.
At the beginning of your first main phase, add for each charge counter on this enchantment.

Each of X target creatures you control connive. You may have any number of them phase out. (To have a creature connive, draw a card, then discard a card. If you discarded a nonland card, put a +1/+1 counter on that creature. Treat phased-out permanents and anything attached to them as though they don't exist until their controller's next turn.)

: Target artifact creature's controller sacrifices it. That player may search their library for a noncreature artifact card, put it onto the battlefield, then shuffle.

Counter target spell.

: Add .
, , Discard a card: Look at the top X cards of your library, where X is the number of artifacts you control. Put one of those cards into your hand and the rest on the bottom of your library in a random order.

Untap all permanents you control during each other player's untap step.

: Prevent the next 4 damage that would be dealt to any target this turn.

Destroy all creatures and lands.

: Add .
: Add or . This artifact deals 1 damage to you.

Flash (You may cast this spell any time you could cast an instant.)
Flying
You may cast spells as though they had flash.

: Add .
: Each player gains control of all creatures they own.

: Add for each creature you control.

Deathtouch
, : Another target creature you control gains deathtouch until end of turn.
Whenever you cast a noncreature spell, The Destined Black Mage deals 1 damage to each opponent. If you have a full party, it deals 3 damage to each opponent instead.