Lightning Axe

As an additional cost to cast this spell, discard a card or pay {5}.
Lightning Axe deals 5 damage to target creature.

Keranos, God of Storms

Indestructible
As long as your devotion to blue and red is less than seven, Keranos isn't a creature.
Reveal the first card you draw on each of your turns. Whenever you reveal a land card this way, draw a card. Whenever you reveal a nonland card this way, Keranos deals 3 damage to any target.

Brazen Wolves

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

Cancel

Pieces of the Puzzle

Reveal the top five cards of your library. Put up to two instant and/or sorcery cards from among them into your hand and the rest into your graveyard.

Lightning Berserker

{R}: Lightning Berserker gets +1/+0 until end of turn.
Dash {R} (You may cast this spell for its dash cost. If you do, it gains haste, and it's returned from the battlefield to its owner's hand at the beginning of the next end step.)

Opal Palace

{T}: Add {C}.
{1}, {T}: Add one mana of any color in your commander's color identity. If you spend this mana to cast your commander, it enters the battlefield with a number of additional +1/+1 counters on it equal to the number of times it's been cast from the command zone this game.

Mountain

Siren Stormtamer

Flying
{U}, Sacrifice Siren Stormtamer: Counter target spell or ability that targets you or a creature you control.

Outpost Siege

As Outpost Siege enters the battlefield, choose Khans or Dragons.
• Khans — At the beginning of your upkeep, exile the top card of your library. Until end of turn, you may play that card.
• Dragons — Whenever a creature you control leaves the battlefield, Outpost Siege deals 1 damage to any target.

Ember-Eye Wolf

Haste
{1}{R}: Ember-Eye Wolf gets +2/+0 until end of turn.

Enigma Drake

Flying
Enigma Drake's power is equal to the number of instant and sorcery cards in your graveyard.

Silburlind Snapper

Silburlind Snapper can't attack unless you've cast a noncreature spell this turn.

Spell Pierce

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

Qal Sisma Behemoth

Qal Sisma Behemoth can't attack or block unless you pay {2}.

Combustible Gearhulk

First strike
When Combustible Gearhulk enters the battlefield, target opponent may have you draw three cards. If the player doesn't, you mill three cards, then Combustible Gearhulk deals damage to that player equal to the total mana value of those cards.

Island

Nivix Cyclops

Defender
Whenever you cast an instant or sorcery spell, Nivix Cyclops gets +3/+0 until end of turn and can attack this turn as though it didn't have defender.

Anticipate

Look at the top three cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order.

Awoken Horror

When this creature transforms into Awoken Horror, return all non-Horror creatures to their owners' hands.

Thing in the Ice

Defender
Thing in the Ice enters the battlefield with four ice counters on it.
Whenever you cast an instant or sorcery spell, remove an ice counter from Thing in the Ice. Then if it has no ice counters on it, transform it.

Thing in the Ice // Awoken Horror

Reduce in Stature

Enchant creature
Enchanted creature has base power and toughness 0/2.

Youthful Scholar

When Youthful Scholar dies, draw two cards.

Rush of Adrenaline

Target creature gets +2/+1 and gains trample until end of turn.

Just the Wind

Return target creature to its owner's hand.
Madness {U} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Enthralling Victor

When Enthralling Victor enters the battlefield, gain control of target creature an opponent controls with power 2 or less until end of turn. Untap that creature. It gains haste until end of turn. (It can attack and {T} this turn.)

Engulf the Shore

Return to their owners' hands all creatures with toughness less than or equal to the number of Islands you control.

Charging Monstrosaur

Sphinx of Magosi

Flying
{2}{U}: Draw a card, then put a +1/+1 counter on Sphinx of Magosi.

Vessel of Volatility

{1}{R}, Sacrifice Vessel of Volatility: Add {R}{R}{R}{R}.

Invasive Surgery

Counter target sorcery spell.
Delirium — If there are four or more card types among cards in your graveyard, search the graveyard, hand, and library of that spell's controller for any number of cards with the same name as that spell, exile those cards, then that player shuffles.

Negate

Chart a Course

Draw two cards. Then discard a card unless you attacked this turn.

Unsubstantiate

Return target spell or creature to its owner's hand.

Contingency Plan

Surveil 5. (Look at the top five cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)

Scribe of the Mindful

{1}, {T}, Sacrifice Scribe of the Mindful: Return target instant or sorcery card from your graveyard to your hand.

Winds of Rebuke

Return target nonland permanent to its owner's hand. Each player mills two cards.

Swiftwater Cliffs

Swiftwater Cliffs enters the battlefield tapped.
When Swiftwater Cliffs enters the battlefield, you gain 1 life.
{T}: Add {U} or {R}.

Highland Lake

Highland Lake enters the battlefield tapped.
{T}: Add {U} or {R}.

Bloodlust Inciter

{T}: Target creature gains haste until end of turn.

Subterranean Scout

When Subterranean Scout enters the battlefield, target creature with power 2 or less can't be blocked this turn.

Magma Spray

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

Refocus

Seagraf Skaab

Fiery Hellhound

{R}: Fiery Hellhound gets +1/+0 until end of turn.

Catalog

Aetherize

Return all attacking creatures to their owner's hand.

Broken Concentration

Counter target spell.
Madness {3}{U} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Gatstaf Ravagers

Menace (This creature can't be blocked except by two or more creatures.)
At the beginning of each upkeep, if a player cast two or more spells last turn, transform Gatstaf Ravagers.

Gatstaf Arsonists

At the beginning of each upkeep, if no spells were cast last turn, transform Gatstaf Arsonists.

Gatstaf Arsonists // Gatstaf Ravagers

Warfire Javelineer

When Warfire Javelineer enters the battlefield, it deals X damage to target creature an opponent controls, where X is the number of instant and sorcery cards in your graveyard.

Galestrike

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

Rubble

Aftermath (Cast this spell only from your graveyard. Then exile it.)
Up to three target lands don't untap during their controller's next untap step.

Reduce

Counter target spell unless its controller pays {3}.

Reduce // Rubble

Naga Oracle

When Naga Oracle enters the battlefield, surveil 3. (Look at the top three cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)

Harsh Mentor

Whenever an opponent activates an ability of an artifact, creature, or land on the battlefield, if it isn't a mana ability, Harsh Mentor deals 2 damage to that player.

Shivan Dragon

Flying (This creature can't be blocked except by creatures with flying or reach.)
{R}: Shivan Dragon gets +1/+0 until end of turn.

Essence Scatter

Drag Under

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

Thassa's Devourer

Constellation — Whenever Thassa's Devourer or another enchantment enters the battlefield under your control, target player mills two cards.