msem-instigator

Submerge each creature you control. At the beginning of the next end step, you may turn any number of face down creatures you control face up. (To submerge a card, exile it, then put it on the battlefield face down under its owner's control as a 2/2 creature.)

Embellish {2}{U} (If you cast this spell for {2}{U}, create a 1/1 blue Thopter artifact creature token with flying when it enters.)
{T}: Target player mills a card. If you control three or more artifacts, that player mills three cards instead.

Tap target creature. It doesn't untap during its controller's next untap step.
Agonize (You may cast this card from your graveyard by putting a -1/-1 counter on a creature you control in addition to paying its other costs. Then exile this card.)

Counter target spell.
Investigate. (Create a colorless Clue artifact token with “{2}, Sacrifice this artifact: Draw a card.”)

This spell costs {X} less to cast, where X is the greatest power among creatures you control.
Tap up to three target creatures. They don't untap during their controller's next untap step.

Draw three cards. Then discard two cards unless you return a permanent you control to its owner's hand.

Exile target creature you control, then return that card to the battlefield under your control. Scry 1.

Equipped creature gets +1/+0, has no name, and loses all non-Pirate, non-Rogue creature types.
{1}: Equipped creature gains the creature types and activated abilities of target creature and its name becomes that creature's name until end of turn.
Equip {1}

Shuffle your hand into your library, then draw X cards.

Draw two cards.
Menagerie — If there are five or more creature types among creatures you control, draw three cards instead.

Counter target spell unless its controller pays {X}. Scry 2.

Enchant creature
Enchanted creature is a blue Shaman with base power and toughness 0/2, has “{2}, {T}: Scry 1,” and loses all other abilities.

Draw a card, then copy target activated or triggered ability you don't control. You may choose new targets for the copy.
Exile Confirm Hypothesis.

An opponent separates all noncreature, nonland cards in your graveyard into two piles. Put one pile into your hand and exile the other. Exile Conflicting Records.

Harness (You may tap a creature you control as you cast this spell. If you do, reduce this spell's mana cost by that creature's power.)
Return target nonland permanent to its owner's hand. If this spell was harnessed, draw a card.

Whenever an opponent draws a card, you may draw a card.

Surveil 1. (Look at the top card of your library. You may put that card into your graveyard.)
Draw a card.

This spell costs {1} less to cast for each card you've drawn this turn.
Copy target instant or sorcery spell. You may reselect modes and choose new targets for the copy.

Look at the top four cards of your library. You may reveal a noncreature card from among them and put it into your hand. Put the rest on the bottom of your library in any order.

Civilized — This spell costs {1} less to cast if you control an artifact, a creature, and an enchantment.
Counter target spell.

Enchant creature or planeswalker
As Consumed by Fashion enters, put two loyalty counters on enchanted permanent.
You control enchanted permanent. It's an Okus planeswalker with “+1: Scry 1” and “-3: Draw a card” and loses all other card types and abilities.

Bloodprice {2}{U} (You may cast this card by sacrificing a creature and paying its bloodprice.)
Draw two cards. If you cast this spell for its bloodprice, instead scry 4, then draw two cards.

Enchant land
When Contested Discovery enters and at the beginning of your upkeep, untap enchanted land. You gain control of that land until end of turn.

Put target nonland permanent on top of its owner's library. If you control a Wizard, you may put that permanent on the bottom of its owner's library instead.

Investigate, then counter target spell unless its controller pays {1} for each Clue you control. (Create a colorless Clue artifact token with “{2}, Sacrifice this artifact: Draw a card.”)