Izzet Guildmage

({U/R} can be paid with either {U} or {R}.)
{2}{U}: Copy target instant spell you control with mana value 2 or less. You may choose new targets for the copy.
{2}{R}: Copy target sorcery spell you control with mana value 2 or less. You may choose new targets for the copy.

Street Spasm

Street Spasm deals X damage to target creature without flying you don't control.
Overload {X}{X}{R}{R} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

Inner Struggle

Target creature deals damage to itself equal to its power.

Inventor's Apprentice

Inventor's Apprentice gets +1/+1 as long as you control an artifact.

Peel from Reality

Return target creature you control and target creature you don't control to their owners' hands.

Magma Spray

Magma Spray deals 2 damage to target creature. If that creature would die this turn, exile it instead.

Cancel

Lightning Strike

Lightning Strike deals 3 damage to any target.

Juggernaut

Juggernaut attacks each combat if able.
Juggernaut can't be blocked by Walls.

Lava Axe

Lava Axe deals 5 damage to target player or planeswalker.

Fall of the Hammer

Target creature you control deals damage equal to its power to another target creature.

Long-Finned Skywhale

Flying
Long-Finned Skywhale can block only creatures with flying.

Ensoul Artifact

Enchant artifact
Enchanted artifact is a creature with base power and toughness 5/5 in addition to its other types.

Izzet Signet

Nullify

Vedalken Blademaster

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

Magmatic Chasm

Creatures without flying can't block this turn.

Furyblade Vampire

Trample
At the beginning of combat on your turn, you may discard a card. If you do, Furyblade Vampire gets +3/+0 until end of turn.

Ogre Savant

When Ogre Savant enters, if {U} was spent to cast it, return target creature to its owner's hand.

Into the Void

Return up to two target creatures to their owners' hands.

Drag Under

Return target creature to its owner's hand.
Draw a card.

Dissipate

Counter target spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard.

Blast of Genius

Choose any target. Draw three cards, then discard a card. Blast of Genius deals damage equal to the discarded card's mana value to that permanent or player.

Negate

Kiln Fiend

Whenever you cast an instant or sorcery spell, Kiln Fiend gets +3/+0 until end of turn.

Divination

Kapsho Kitefins

Flying
Whenever Kapsho Kitefins or another creature you control enters, tap target creature an opponent controls.

Brazen Wolves

Whenever Brazen Wolves attacks, it gets +2/+0 until end of turn.

Wind Drake

Niv-Mizzet, the Firemind

Flying
Whenever you draw a card, Niv-Mizzet, the Firemind deals 1 damage to any target.
{T}: Draw a card.

Jace's Ingenuity

Reckless Fireweaver

Whenever an artifact you control enters, Reckless Fireweaver deals 1 damage to each opponent.

Overwhelming Intellect

Counter target creature spell. Draw cards equal to that spell's mana value.

Voldaren Duelist

Haste
When Voldaren Duelist enters, target creature can't block this turn.

Revolutionary Rebuff

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

Shrewd Hatchling

Shrewd Hatchling enters with four -1/-1 counters on it.
{U/R}: Target creature can't block Shrewd Hatchling this turn.
Whenever you cast a blue spell, remove a -1/-1 counter from Shrewd Hatchling.
Whenever you cast a red spell, remove a -1/-1 counter from Shrewd Hatchling.

Stitchwing Skaab

Flying
{1}{U}, Discard two cards: Return Stitchwing Skaab from your graveyard to the battlefield tapped.

Steamcore Weird

When Steamcore Weird enters, if {R} was spent to cast it, it deals 2 damage to any target.

Call to Heel

Return target creature to its owner's hand. Its controller draws a card.

Borderland Marauder

Whenever Borderland Marauder attacks, it gets +2/+0 until end of turn.

Exultant Cultist

Disperse

Return target nonland permanent to its owner's hand.

Izzet Boilerworks

Izzet Boilerworks enters tapped.
When Izzet Boilerworks enters, return a land you control to its owner's hand.
{T}: Add {U}{R}.

Ghostly Wings

Enchant creature
Enchanted creature gets +1/+1 and has flying.
Discard a card: Return enchanted creature to its owner's hand.

Evanescent Intellect

Enchant creature
Enchanted creature has "{1}{U}, {T}: Target player mills three cards."

Voyage's End

Return target creature to its owner's hand. Scry 1. (Look at the top card of your library. You may put that card on the bottom.)

Force Spike

Counter target spell unless its controller pays {1}.

Lonely Sandbar

Lonely Sandbar enters tapped.
{T}: Add {U}.
Cycling {U} ({U}, Discard this card: Draw a card.)

Hijack

Gain control of target artifact or creature until end of turn. Untap it. It gains haste until end of turn.

Goblin Roughrider

Salivating Gremlins

Whenever an artifact you control enters, Salivating Gremlins gets +2/+0 and gains trample until end of turn.

Goblin War Paint

Enchant creature
Enchanted creature gets +2/+2 and has haste.

Mountain

Stitched Mangler

Stitched Mangler enters tapped.
When Stitched Mangler enters, tap target creature an opponent controls. That creature doesn't untap during its controller's next untap step.

Pin to the Earth

Enchant creature
Enchanted creature gets -6/-0.

Brainstorm

Draw three cards, then put two cards from your hand on top of your library in any order.

Island

Terror of the Fairgrounds

Evolving Wilds

{T}, Sacrifice Evolving Wilds: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Dragon Mantle

Enchant creature
When Dragon Mantle enters, draw a card.
Enchanted creature has "{R}: This creature gets +1/+0 until end of turn."

Bladetusk Boar

Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.)