msem-instigator

Surveil 1. You draw a card and you lose 1 life. (To surveil 1, look at the top card of your library. You may put that card into your graveyard.)
Tether (Then if you cast this from your hand, you may exile it tethered to a creature you control. When it dies, you may cast this from exile without paying its mana cost.)

Each opponent loses 2 life. Scry 1.
Showcase {3}{B} (Then if you cast this for its showcase cost, create a 1/1 red Bard creature token that can't block and exile this. Whenever it attacks, you may cast a free copy of this.)

Return target artifact or creature to its owner's hand.

When Diseased Prophet enters, each opponent loses 1 life.
Revive {B} ({B}, Exile this card from your graveyard: Create a token that's a copy of it except it has no mana cost. Revive only as a sorcery.)

Return target creature card from your graveyard to your hand.

Counter target instant spell.

Choose one —
• Dispersive Volley deals 1 damage to each of up to three target attacking or blocking creatures.
• Target player sacrifices an enchantment.

Choose one —
• Target player sacrifices an artifact.
• Target player sacrifices an enchantment.

When Distant Lover enters, create a 1/1 colorless Citizen creature token.

As an additional cost to cast this spell, discard a card or pay {2}.
Distant Thunder deals 3 damage to any target.

Choose one or both —
• Destroy target creature with mana value 1 or less.
• Each player discards a card.

Whenever you cast your second spell each turn, you may tap target creature and put a stun counter on it.

Choose one or both —
• Tap target creature.
• Untap target creature.

Enchant creature
Enchanted creature has “Whenever this creature deals damage to an opponent, you may draw a card.”

Enchant creature
Whenever enchanted creature attacks or blocks, its controller gets a poison counter.

Whenever Dodgy Infant becomes the target of a spell, you may change the target to another creature you control.

When Doom Cultist dies, target player loses 2 life and you gain 2 life.

Deathtouch
When Doomed Explorer dies, create a Treasure token. (It's an artifact with “{T}, Sacrifice this artifact: Add one mana of any color.”)

When Doomed Traveler dies, create a 1/1 white Spirit creature token with flying.

When Doomed Widow dies, create a 1/1 white Spirit creature token with flying.

When Doomed Woodsman dies, create a 1/1 green Faerie Druid creature token with hexproof.

{T}, Sacrifice an Equipment: Return target Equipment card from your graveyard to the battlefield. Activate only as a sorcery.

{T}: Add {G}.
{B/G}, {T}: Exile target card from a graveyard. If that card is a creature card, put a +1/+1 counter on Dovon, Verdant Experimenter and you gain 1 life.

Enchant opponent
When Down with the Ship enters, enchanted player discards a card unless they sacrifice a creature.
{1}{B}, Sacrifice Down with the Ship: Return target creature card from your graveyard to your hand.

Pressure {3}{U} (You may cast this spell for its pressure cost if seven or more cards are in your graveyard.)
Return target creature to its owner's hand. If this spell was cast for its pressure cost, put that creature into its owner's library second from the top instead.