mtg.wtf

Companion — Each nonland card in your starting deck shares a card type.
As Umori, the Collector enters, choose a card type.
Spells you cast of the chosen type cost {1} less to cast.

Return target creature card from your graveyard to the battlefield with a lifelink counter on it.

Unbreathing Horde enters with a +1/+1 counter on it for each other Zombie you control and each Zombie card in your graveyard.
If Unbreathing Horde would be dealt damage, prevent that damage and remove a +1/+1 counter from it.

Target player discards two cards.
Cycling {2}

Return target creature card from your graveyard to the battlefield.
Flashback {3}{W}

Choose target creature. If you're on the Mirran team, put a +1/+1 counter on that creature and it gains lifelink until end of turn. If you're on the Phyrexian team, put a -1/-1 counter on that creature and it gains deathtouch until end of turn.

Prevent all damage that would be dealt to Uncle Istvan by creatures.

Whenever Undead Augur or another Zombie you control dies, you draw a card and you lose 1 life.

When Undead Butler enters, mill three cards.
When Undead Butler dies, you may exile it. When you do, return target creature card from your graveyard to your hand.

When Undead Executioner dies, you may have target creature get -2/-2 until end of turn.

{1}{B}, Discard a card: Return Undead Gladiator from your graveyard to your hand. Activate only during your upkeep.
Cycling {1}{B}

{R}: Undead Leotau gets +1/-1 until end of turn.
Unearth {2}{B}

When Undead Servant enters, create a 2/2 black Zombie creature token for each card named Undead Servant in your graveyard.

Zombie spells you cast cost {1} less to cast.
Zombie creatures you control get +2/+1.

Deathtouch
When Underbridge Warlock enters, you get a one-time boon with "At the beginning of your end step, if three or more creatures died this turn, each opponent loses 5 life and you gain 5 life."
At the beginning of your end step, if you have a boon, you mill three cards, draw a card, and lose 2 life.

When Undercity Eliminator enters, you may sacrifice an artifact or creature. When you do, exile target creature an opponent controls.

{1}, Sacrifice a creature: Target player reveals cards from the top of their library until they reveal a land card, then puts those cards into their graveyard.

{1}, Sacrifice another creature: Put a +1/+1 counter on Undercity Necrolisk. It gains menace until end of turn. Activate only as a sorcery.

Target player loses 1 life, discards a card, then sacrifices a permanent of their choice.
Cipher

Target opponent discards a card. Then they may discard an additional card. If they don't, conjure a duplicate of a random card from their library into your hand. It perpetually gains "You may spend mana as though it were mana of any color to cast this spell."

When Undercity Scavenger enters, you may sacrifice another creature. If you do, put two +1/+1 counters on Undercity Scavenger, then scry 2.

{T}: Create a Treasure token. Activate only if a creature died this turn.

Fear
{B}: Undercity Shade gets +1/+1 until end of turn.

Target opponent sacrifices a creature of their choice. If you control a creature with power 4 or greater, you gain 4 life.