msem-instigator

Haste
{R}, Sacrifice Deepstone Operative: Destroy target artifact.

Augmented — At the beginning of each end step, if you've spent {W}{U}{B}{R}{G} to cast spells this turn, put a +1/+1 counter on Defected Explorer.

Spells can't be cast from libraries.
If a nonland permanent would enter the battlefield from a library, exile it instead.

Deft Goldsnatch can't be blocked.

Whenever you scry, tap target creature an opponent controls.
{2}{W}{U}: Scry 1. You gain 1 life.

This spell costs {1} less to cast for each time you catalyzed this turn.
Counter target spell unless its controller pays {X}.

Whenever Deluge Crab perseveres, target opponent mills three cards. (A creature perseveres when it survives damage.)

Repeat the following process X times. Reveal the top two cards of your library. Put one of them into your hand and the other into your graveyard.

At the beginning of your upkeep, choose a creature. Its controller may sacrifice it. If that player doesn't, you gain life equal to its power.

Target creature gets +5/+5 until end of turn.
Fabled {4}{G} (Then if you cast this for its fabled cost, put it onto the battlefield transformed attached to that creature.)

Trample
At the beginning of your upkeep, sacrifice another creature. If you do, put X +1/+1 counters on Demented Host, where X is that creature's power.

Renown 1 (When this creature deals combat damage to a player, if it isn't renowned, put a +1/+1 counter on it and it becomes renowned.)
When Demolitionist Deviser dies, it deals damage equal to its power to any target.

Whenever a player searches their library, that player can't untap more than two permanents during their next untap step.

Tap up to two target creatures.
Cycling {1}{U} ({1}{U}, Discard this card: Draw a card.)
When you cycle Denied Attempt, you may tap target creature.

{2}{U}{B}: Return Depth Charger to its owner's hand. If you do, return target creature to its owner's hand. That player discards a card.

Deathtouch
When Depthlight Salvager enters the battlefield, you may salvage a creature card with mana value 3 or less. (Exile one from your graveyard until this creature leaves the battlefield. Whenever this creature deals combat damage to a player, put a card it salvaged into your hand.)

Hexproof
Rapport — Whenever Depths Stalker and at least one other creature you control become tapped, Depths Stalker gets +1/+0 until end of turn and can't be blocked this turn.

Enchant creature
Enchanted creature gets -3/-0.
Spells that target enchanted creature cost {1} more to cast.

When Deputy Gibem enters the battlefield, post a bounty on each creature and each planeswalker. (Put a bounty counter on those permanents. Each of them have “When this permanent dies, each opponent draws a card” as long as it has a bounty counter on it.)

Destroy target creature if it has the least power or is tied for least power among creatures on the battlefield.
Memento {3}{B}{B} (You may cast this from your graveyard for {3}{B}{B}. If you do, put it onto the battlefield transformed after it resolves. Exile it if it would leave the battlefield or not resolve.)

Destroy each artifact with mana value X or less, then create an Idol token for each artifact destroyed this way. (It's an artifact with “{1}, Sacrifice this artifact: Put a +1/+1 counter on target creature. Activate only as a sorcery.”)

When Desert Bloom enters the battlefield, you gain 4 life.
At the beginning of your upkeep, add {G}{G}.

Target permanent you control gains protection from your opponents until end of turn.
Draw a card.

Once each turn, when you foretell a card or cast a foretold spell, you may create a 1/1 blue Rogue creature token.
{1}{U}{B}: Draw a card, then discard a card.

Haste
Whenever Desperate Reconnoiterer becomes untapped, scry 1.