Muddle the Mixture

Counter target instant or sorcery spell.
Transmute {1}{U}{U} ({1}{U}{U}, Discard this card: Search your library for a card with the same mana value as this card, reveal it, put it into your hand, then shuffle. Transmute only as a sorcery.)

Flicker of Fate

Exile target creature or enchantment, then return it to the battlefield under its owner's control.

Grim Tutor

Search your library for a card, put that card into your hand, then shuffle. You lose 3 life.

Land Tax

At the beginning of your upkeep, if an opponent controls more lands than you, you may search your library for up to three basic land cards, reveal them, put them into your hand, then shuffle.

Idolized

Enchant creature
Enchanted creature has "Whenever this creature attacks alone, it gets +X/+X until end of turn, where X is the number of nonland permanents you control."

Robe of Stars

Equipped creature gets +0/+3.
Astral Projection — {1}{W}: Equipped creature phases out. (Treat it and anything attached to it as though they don't exist until its controller's next turn.)
Equip {1}

Slip On the Ring

Exile target creature you own, then return it to the battlefield under your control. The Ring tempts you.

Magewright's Stone

{1}, {T}: Untap target creature that has an activated ability with {T} in its cost.

Otherworldly Journey

Exile target creature. At the beginning of the next end step, return that card to the battlefield under its owner's control with a +1/+1 counter on it.

Archmage's Charm

Choose one —
• Counter target spell.
• Target player draws two cards.
• Gain control of target nonland permanent with mana value 1 or less.

Diviner's Portent

Roll a d20 and add the number of cards in your hand.
1—14 | Draw X cards.
15+ | Scry X, then draw X cards.

Academy Manufactor

If you would create a Clue, Food, or Treasure token, instead create one of each.

Disallow

Counter target spell, activated ability, or triggered ability. (Mana abilities can't be targeted.)

Mind Spring

Cyclonic Rift

Return target nonland permanent you don't control to its owner's hand.
Overload {6}{U} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

Bootleggers' Stash

Lands you control have "{T}: Create a Treasure token."

Long Road Home

Enlightened Tutor

Search your library for an artifact or enchantment card, reveal it, then shuffle and put that card on top.

Mana Drain

Counter target spell. At the beginning of your next main phase, add an amount of {C} equal to that spell's mana value.

Anointed Procession

If an effect would create one or more tokens under your control, it creates twice that many of those tokens instead.