msem-instigator

Enchant opponent
Whenever you attack enchanted player, look at the top X cards of your library, where X is one plus the number of attacking creatures you control. Put one of those cards into your hand and the rest on the bottom of your library in any order.

Choose target creature you control, then choose two —
• Put a +1/+1 counter on it.
• It gains hexproof until end of turn.
• It can't be blocked this turn.

Look at the top two cards of your library. Put one of them into your hand and the other on the bottom of your library.

Target player puts the bottom X cards of their library into their graveyard.

Creatures your opponents control get -4/-0 until end of turn.
Quickdraw {1}{U}{U} (When a creature you control blocks or becomes blocked, you may cast this spell for {1}{U}{U}.)

Put a +1/+1 counter on up to one target creature you control. That creature can't be blocked this turn.
Draw a card.

Look at the top three cards of your library. Put one of them into your hand and the rest into your graveyard.
Augmented — If you've spent {W}{U}{B}{R}{G} to cast spells this turn, put two of those cards into your hand instead.

Goad up to one target creature. (Until your next turn, that creature attacks each combat if able and attacks a player other than you if able.)
Draw a card.

Up to two target creatures can't be blocked this turn. Until end of turn, whenever either of those creatures deals combat damage to a player or planeswalker, you draw a card.

Tap up to two target permanents. They don't untap during their controller's next untap step. You may put Snooze into its owner's library third from the top.

Enchant artifact or creature
Enchanted permanent doesn't untap during its controller's untap step.
Whenever you make first contact, scry 1. (You make first contact the first time each turn you cast a spell with a name not in your graveyard or control already.)

Create a 1/1 blue Bird creature token with flying.
Inscribe {2}{U} ({2}{U}: Exile this card from your hand inscribed on a creature you control. Whenever that creature attacks, its controller may cast a copy of the inscribed card without paying its mana cost. Inscribe only as a sorcery.)

Bleed {0} (You may cast this spell for its bleed cost if an opponent has lost life this turn.)
Look at target player's hand.
Draw a card.

Look at the top four cards of your library. Put one of them into your hand, another on top of your library, and the rest into your graveyard.
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.)

Target player mills six cards. Return each creature that shares a name with a card milled this way to its owner's hand.
Prophecy {1}{U} (Once each turn, you may exile a card with prophecy as you reveal it. When you do, you may cast it for its prophecy cost as long as it's exiled.)

Look at the top five cards of your library. You may reveal a nonland card from among them. If you do, put that card into your hand and cast a copy of it without paying its mana cost. Put the rest into your graveyard.

Counter target creature spell unless its controller pays {2}.

Create a 1/1 blue Advisor creature token.
Draw a card.

Counter target spell unless its controller pays {X}. Look at the top X cards of your library. Put up to one of them on top of your library and the rest on the bottom of your library in a random order.

Create two 1/1 blue Elemental creature tokens with flying.

Look at the bottom two cards of your library. Manifest one of them, then put the other on the top or bottom of your library. (To manifest a card, put it onto the battlefield face down as a 2/2 creature. Turn it face up any time for its mana cost if it's a creature card.)

Equipped creature gets +3/+3.
Whenever equipped creature attacks, draw a card.
Equip {5}
Equip creature you don't own {0}

Until end of turn, target creature loses all abilities and has base power and toughness 1/1.
Draw a card, then discard a card.

Whenever an artifact you control enters, you may put a progress counter on Spectacle of Innovation.
[progress 1+] Artifact creatures you control get +1/+1.
[progress 3+] Artifact creatures you control have flying and hexproof.
Artifact creatures you control have flying and hexproof.

Put target creature on top of its owner's library.
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.)