msem-instigator

At the beginning of your upkeep, look at the top card of your library. If it's an artifact card, you may reveal it and put it into your hand.

[+1]: Exile up to one other target permanent until the beginning of its owner's next end step.
[–1]: Return another target planeswalker to its owner's hand.
[–6]: You get an emblem with “Whenever a permanent leaves the battlefield, each opponent discards a card.”

Deathtouch
When Vizier of Lies enters, you may return target instant or sorcery card from your graveyard to your hand.

Menace
Whenever one or more cards leave your graveyard or Watchers of the Veil leaves your graveyard, you may draw a card. If you do, discard a card.

{T}, Pay 1 life: Add {U} or {B}.
{2}, {T}, Sacrifice Weathered Wharf and another permanent: Draw a card. Activate only during your turn.

Whispering Canal enters tapped unless you control a basic land.
{T}: Add {U} or {B}.

Menace
Whenever Wightclaw deals combat damage to a player, that player discards a card and you draw a card.

Cast a copy of target creature or Revelation card in your graveyard without paying its mana cost. If a Revelation is cast this way, it enters as a Horror creature after it resolves.
Exile Wish to See.

Flash
When Witch of the Veil enters, if it was cast, you may sacrifice a creature. If you do, return that card to the battlefield under its owner's control.

Bleed {U/B} (You may cast this spell for its bleed cost if an opponent has lost life this turn.)
Target player mills eight cards.

Search your library for two cards and your graveyard for two cards, each with different names, and reveal them. An opponent exiles two of those cards. Put the rest into your hand. Then shuffle.
Exile Words Unspoken.

When Wretched Spawn enters, you may return target permanent to its owner's hand. If you do, that player discards a card.
Unearth {4}{U}{B} ({4}{U}{B}: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the end step or if it would leave the battlefield. Unearth only as a sorcery.)

Deathtouch
Inspired — Whenever Yenzu Nightblade becomes untapped, target creature you control gets +1/+1 and gains deathtouch until end of turn.

Abandoned Cairn enters tapped if you control another nonbasic land.
{T}: Add {B} or {R}.

Abyss Howler must be blocked if able.
Whenever Abyss Howler becomes blocked, defending player loses 2 life and you gain 2 life.

When Abyssal Pact enters, you draw two cards and each player loses 2 life.
Players can't gain life.
Damage can't be prevented.

{T}: Add {C}.
{T}, Exile two cards from your graveyard: Add {B} or {R}.

At the beginning of your end step, you lose 3 life unless you sacrifice a creature.

Whenever a creature you control dies, put a +1/+1 counter on Agent of Andazir.

Whenever Akoum Pathfinder attacks, create a 1/1 red Goblin creature token.
Other Goblins you control get +1/+0 and have haste.

Deathtouch
Whenever a creature you don't control dies, choose one —
• Create a Treasure token.
• You draw a card and you lose 1 life.

Choose a number. Reveal that many cards from the top of your library and put them into your hand. You lose life equal to the total mana value of those cards.

(Choose only one work as a sorcery to add its ability.)
When Altar of Twisted Piety enters, return target creature card with mana value 3 or less from your graveyard to the battlefield.
{2}{B}: Shadows Bind Us
{B}, Sacrifice three creatures: Create a 5/5 black Demon creature token. Put your choice of a flying counter or a lifelink counter on it. It can't block this turn.
{2}{R}: Hellfire Fills Us
{R}, Sacrifice a creature: Altar of Twisted Piety deals 2 damage to any target.

Flying
Whenever Angel of the Eclipse deals combat damage, it deals that much damage to each attacking and blocking creature.
Prevent all damage that would be dealt to Angel of the Eclipse by sources you control.

Flip a coin until you lose a flip or choose to stop flipping. Exile the top X cards of each player's library, where X is 1 plus the number of flips you won. You may play those cards until the end of your next turn, and you may spend mana as though it were mana of any color to cast those spells.