msem-instigator

Until end of turn, target creature loses all abilities and has base power and toughness 1/1. If it's attacking, counter all triggered abilities from that source.

Kicker—Sacrifice an artifact. (You may sacrifice an artifact in addition to any other costs as you cast this spell.)
Target creature's owner puts it on the top or bottom of their library. If this spell was kicked, draw a card.

Investigate ten times. (Create ten colorless Clue artifact tokens with “{2}, Sacrifice this artifact: Draw a card.”)

Flash
Flying
When Strange Sights dies, investigate. (Create a colorless Clue artifact token with “{2}, Sacrifice this artifact: Draw a card.”)

Prowess
{1}: Shifting Dweller gets +1/-1 until end of turn.

Draw three cards. Then discard two cards unless you discard a land card.

At the beginning of your upkeep, surveil 1. (Look at the top card of your library. You may put that card into your graveyard.)
{2}{U}{U}, Sacrifice Search for a New Land: Draw two cards.

When River Miscreants enters, target creature you control can't be blocked this turn.
{2}{U}: Return River Miscreants to its owner's hand. Activate only as a sorcery.

Counter target spell.
You may draw four cards. If you do, skip your next turn.

When Recognification Process enters and at the beginning of your upkeep, create a token that's a copy of target artifact you control, then sacrifice an artifact.

When Pale Night Remnants enters, return up to one target nonland permanent and all other permanents with the same name as that permanent to their owners' hands.

When Overwhelming Paperwork enters or is put into a graveyard from the battlefield, return up to one target creature to its owner's hand.
{3}{U}{U}: Sacrifice Overwhelming Paperwork. Activate only as a sorcery.

Whenever you cast a noncreature spell, up to one target artifact or non-Aura enchantment you control becomes a 3/3 creature in addition to its other types until end of turn.

Flying, vigilance
When Manafly enters, tap target creature an opponent controls. That creature doesn't untap during its controller's next untap step.

Fleeting {2}{U} (You may cast this spell for its fleeting cost. If you do, sacrifice it at the beginning of the next end step.)
[+1]: Any number of other target nonland permanents lose all abilities until your next turn.
[0]: You may tap an untapped creature you control. If you do, draw two cards.
[–2]: Create a token that's a copy of target creature, except it loses all abilities until end of turn.

Whenever Insatiable Student attacks, you may sacrifice an artifact. When you do, tap target creature an opponent controls.

When Inquisitive Pod enters, draw a card.
Whenever you cast your second spell each turn, Inquisitive Pod gets +3/+3 until end of turn.

Whenever you cast a spell, you may cast a spell from your hand with lesser mana value without paying its mana cost.
You can't cast more than one spell of each card type each turn.

You have no maximum hand size.
Whenever a player casts a spell, put a +1/+1 counter on Humar.
At the beginning of your upkeep, target player draws cards equal to Humar's power.

Exile target creature you control, then each other player may exile a creature they control. Each player who exiled a creature this way reveals cards from the top of their library until they reveal a creature card with mana value different from the creature they exiled, puts that card onto the battlefield, then shuffles.

Whenever a creature you control deals combat damage to a player, you may draw a card.
Fleeting {1}{U} (You may cast this spell for its fleeting cost. If you do, sacrifice it at the beginning of the next end step.)

When Faulty Lock enters or is put into a graveyard from the battlefield, choose a creature you control. Whenever that creature deals combat damage to a player this turn, draw a card.
{2}{U}: Sacrifice Faulty Lock. Activate only as a sorcery.

Flying, ward {2}
Whenever Faraway Albatross attacks, choose one —
• Faraway Albatross gets +1/+1 until end of turn for each spell you've cast this turn.
• Investigate. (Create a colorless Clue artifact token with “{2}, Sacrifice this artifact: Draw a card.”)

Put up to one target artifact, instant, or sorcery card from your graveyard on top of your library.
Investigate twice. (Create two colorless Clue artifact tokens with “{2}, Sacrifice this artifact: Draw a card.”)

{U}: If Engrossed Reader doesn't have flying, put a flying counter on it.
{1}{U}: If Engrossed Reader has flying, draw a card, then discard a card. If you discarded a nonland card, put a +1/+1 counter on Engrossed Reader.
{1}{U}{U}: If Engrossed Reader has a +1/+1 counter on it, it becomes a copy of another target creature until end of turn.