Scornful Egotist

Morph {U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

Backslide

Turn target creature with a morph ability face down.
Cycling {U} ({U}, Discard this card: Draw a card.)

Cabal Conditioning

Any number of target players each discard a number of cards equal to the highest mana value among permanents you control.

Brine Elemental

Morph {5}{U}{U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)
When Brine Elemental is turned face up, each opponent skips their next untap step.

Dispersal Shield

Counter target spell if its mana value is less than or equal to the highest mana value among permanents you control.

Rush of Knowledge

Draw cards equal to the highest mana value among permanents you control.

Juxtapose

You and target player exchange control of the creature you each control with the highest mana value. Then exchange control of artifacts the same way. If two or more permanents a player controls are tied for highest, their controller chooses one of them.

Perilous Research

Draw two cards, then sacrifice a permanent.

Dark Revenant

Flying
When Dark Revenant dies, put it on top of its owner's library.

Air Bladder

Enchant creature
Enchanted creature has flying.
Enchanted creature can block only creatures with flying.

Monstrous War-Leech

Kicker {U} (You may pay an additional {U} as you cast this spell.)
As Monstrous War-Leech enters, if it was kicked, mill four cards. (To mill a card, put the top card of your library into your graveyard.)
Monstrous War-Leech's power and toughness are each equal to the highest mana value among cards in your graveyard.

Bewilder

Target creature gets -3/-0 until end of turn.
Draw a card.

Dodgy Jalopy

Trample
Dodgy Jalopy's power is equal to the highest mana value among creatures you control.
Crew 3
Scavenge {2}{G} ({2}{G}, Exile this card from your graveyard: Put a number of +1/+1 counters equal to this card's power on target creature. Scavenge only as a sorcery.)

Dream Stalker

When Dream Stalker enters, return a permanent you control to its owner's hand.

Colfenor's Plans

When Colfenor's Plans enters, exile the top seven cards of your library face down.
You may look at the cards exiled with Colfenor's Plans, and you may play lands and cast spells from among those cards.
Skip your draw step.
You can't cast more than one spell each turn.

Storm Crow

Flying (This creature can't be blocked except by creatures with flying or reach.)

Hedron Matrix

Equipped creature gets +X/+X, where X is its mana value.
Equip {4}

Blinding Spray

Creatures your opponents control get -4/-0 until end of turn.
Draw a card.

Accelerated Mutation

Target creature gets +X/+X until end of turn, where X is the highest mana value among permanents you control.

Aladdin's Lamp

{X}, {T}: The next time you would draw a card this turn, instead look at the top X cards of your library, put all but one of them on the bottom of your library in a random order, then draw a card. X can't be 0.