The Mycotyrant

Trample
The Mycotyrant’s power and toughness are each equal to the number of creatures you control that are Fungi and/or Saprolings.
At the beginning of your end step, create X 1/1 black Fungus creature tokens with “This creature can’t block,” where X is the number of times you descended this turn. (You descend each time a permanent card is put into your graveyard from anywhere.)

The Mycotyrant

Trample
The Mycotyrant’s power and toughness are each equal to the number of creatures you control that are Fungi and/or Saprolings.
At the beginning of your end step, create X 1/1 black Fungus creature tokens with “This creature can’t block,” where X is the number of times you descended this turn. (You descend each time a permanent card is put into your graveyard from anywhere.)

King Narfi’s Betrayal

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I — Each player mills four cards. Then you may exile a creature or planeswalker card from each graveyard.
II, III — Until end of turn, you may cast spells from among cards exiled with King Narfi’s Betrayal, and you may spend mana as though it were mana of any color to cast those spells.

The Mycotyrant

Trample
The Mycotyrant’s power and toughness are each equal to the number of creatures you control that are Fungi and/or Saprolings.
At the beginning of your end step, create X 1/1 black Fungus creature tokens with “This creature can’t block,” where X is the number of times you descended this turn. (You descend each time a permanent card is put into your graveyard from anywhere.)

Reverse Engineer

Improvise (Your artifacts can help cast this spell. Each artifact you tap after you’re done activating mana abilities pays for .)
Draw three cards.

Ghalta, Primal Hunger

This spell costs less to cast, where X is the total power of creatures you control.
Trample (This creature can deal excess combat damage to the player or planeswalker it’s attacking.)

Yisan, the Wanderer Bard

, , Put a verse counter on Yisan, the Wanderer Bard: Search your library for a creature card with mana value equal to the number of verse counters on Yisan, put it onto the battlefield, then shuffle.

Furious Rise

At the beginning of your end step, if you control a creature with power 4 or greater, exile the top card of your library. You may play that card until you exile another card with Furious Rise.

Bane of Bala Ged

Whenever Bane of Bala Ged attacks, defending player exiles two permanents they control.

Ghalta, Primal Hunger

This spell costs less to cast, where X is the total power of creatures you control.
Trample (This creature can deal excess combat damage to the player or planeswalker it’s attacking.)

Yisan, the Wanderer Bard

, , Put a verse counter on Yisan, the Wanderer Bard: Search your library for a creature card with mana value equal to the number of verse counters on Yisan, put it onto the battlefield, then shuffle.

Erebos, Bleak-Hearted

Indestructible
As long as your devotion to black is less than five, Erebos isn’t a creature.
Whenever another creature you control dies, you may pay 2 life. If you do, draw a card.
, Sacrifice another creature: Target creature gets -2/-1 until end of turn.

Zilortha, Strength Incarnate

Trample
Lethal damage dealt to creatures you control is determined by their power rather than their toughness.

Zilortha, Strength Incarnate

Trample
Lethal damage dealt to creatures you control is determined by their power rather than their toughness.

Myriad Construct

Kicker
If Myriad Construct was kicked, it enters with a +1/+1 counter on it for each nonbasic land your opponents control.
When Myriad Construct becomes the target of a spell, sacrifice it and create a number of 1/1 colorless Construct artifact creature tokens equal to its power.

Ghalta, Primal Hunger

This spell costs less to cast, where X is the total power of creatures you control.
Trample (This creature can deal excess combat damage to the player or planeswalker it’s attacking.)

Ixalan’s Binding

When Ixalan’s Binding enters, exile target nonland permanent an opponent controls until Ixalan’s Binding leaves the battlefield.
Your opponents can’t cast spells with the same name as the exiled card.

Tymaret, Chosen from Death

Tymaret’s toughness is equal to your devotion to black. (Each in the mana costs of permanents you control counts toward your devotion to black.)
: Exile up to two target cards from graveyards. You gain 1 life for each creature card exiled this way.

Reverse Engineer

Improvise (Your artifacts can help cast this spell. Each artifact you tap after you’re done activating mana abilities pays for .)
Draw three cards.

Zhalfirin Void

When Zhalfirin Void enters, scry 1. (Look at the top card of your library. You may put that card on the bottom.)
: Add .

Feldon of the Third Path

, : Create a token that’s a copy of target creature card in your graveyard, except it’s an artifact in addition to its other types. It gains haste. Sacrifice it at the beginning of the next end step.

Yawgmoth’s Vile Offering

(You may cast a legendary sorcery only if you control a legendary creature or planeswalker.)
Put up to one target creature or planeswalker card from a graveyard onto the battlefield under your control. Destroy up to one target creature or planeswalker. Exile Yawgmoth’s Vile Offering.

K’rrik, Son of Yawgmoth

( can be paid with either or 2 life.)
Lifelink
For each in a cost, you may pay 2 life rather than pay that mana.
Whenever you cast a black spell, put a +1/+1 counter on K’rrik, Son of Yawgmoth.

Merciless Resolve

As an additional cost to cast this spell, sacrifice a creature or land.
Draw two cards.