As Cloud Key enters the battlefield, choose artifact, creature, enchantment, instant, or sorcery. Spells you cast of the chosen type cost {1} less to cast.

Activated abilities of creatures cost {1} less to activate. This effect can't reduce the mana in that cost to less than one mana.

Spells you cast cost {1} less to cast for each card with the same name as that spell in your graveyard.

Red spells you cast cost {1} less to cast.

Imprint — When Semblance Anvil enters the battlefield, you may exile a nonland card from your hand. Spells you cast that share a card type with the exiled card cost {2} less to cast.

Whenever you cast an instant or sorcery spell, Guttersnipe deals 2 damage to each opponent.

Defender {T}: Thermo-Alchemist deals 1 damage to each opponent. Whenever you cast an instant or sorcery spell, untap Thermo-Alchemist.

When Blood Sun enters the battlefield, draw a card. All lands lose all abilities except mana abilities.

{4}, {T}: Reveal the top card of your library. If it has the same name as a card in your graveyard, put it into your graveyard. Otherwise, draw a card.

As an additional cost to cast this spell, discard two cards. Draw three cards.

Draw two cards, then discard two cards. Flashback {2}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

As an additional cost to cast this spell, discard a land card. Draw two cards.

Target creature can't block this turn. Draw a card.

As an additional cost to cast this spell, discard a card. Draw two cards.

Whenever you cast an instant or sorcery spell from your hand, you may cast target card with the same name as that spell from your graveyard. (You still pay its costs.)

Whenever you cast an instant or sorcery spell, flip a coin. If you lose the flip, return that spell to its owner's hand. If you win the flip, copy that spell, and you may choose new targets for the copy. Partner (You can have two commanders if both have partner.)

Whenever you cast an instant or sorcery spell that has the same name as a card in your graveyard, you may put a quest counter on Pyromancer Ascension. Whenever you cast an instant or sorcery spell while Pyromancer Ascension has two or more quest counters on it, you may copy that spell. You may choose new targets for the copy.

Whenever you activate an ability, if it isn't a mana ability, you may pay {2}. If you do, copy that ability. You may choose new targets for the copy.

Imprint — When Spellweaver Helix enters the battlefield, you may exile two target sorcery cards from a single graveyard. Whenever a player casts a card, if it has the same name as one of the cards exiled with Spellweaver Helix, you may copy the other. If you do, you may cast the copy without paying its mana cost.

Whenever a player casts a red spell, you may pay {3}. If you do, untap target permanent.

Flying Landfall — Whenever a land enters the battlefield under your control, Akoum Hellkite deals 1 damage to any target. If that land is a Mountain, Akoum Hellkite deals 2 damage instead.

Flying {R}: Ancient Hellkite deals 1 damage to target creature defending player controls. Activate only if Ancient Hellkite is attacking.

Flying, haste At the beginning of the end step, return Archwing Dragon to its owner's hand.

Flying At the beginning of your draw step, draw an additional card. At the beginning of your end step, discard your hand.

Flying Whenever Backdraft Hellkite attacks, each instant and sorcery card in your graveyard gains flashback until end of turn. The flashback cost is equal to its mana cost.

Flash Flying When Bogardan Hellkite enters the battlefield, it deals 5 damage divided as you choose among any number of targets.

Flying, haste

This spell costs {3} less to cast if you have nine or more cards in your graveyard. Flying When Capricious Hellraiser enters the battlefield, exile three cards at random from your graveyard. Choose a noncreature, nonland card from among them and copy it. You may cast the copy without paying its mana cost.

Flying {X}, {T}: Crimson Hellkite deals X damage to target creature. Spend only red mana on X.

Flying When Demanding Dragon enters the battlefield, it deals 5 damage to target opponent unless that player sacrifices a creature.

Flying Whenever Dragon Mage deals combat damage to a player, each player discards their hand, then draws seven cards.

Flying, trample Double strike (This creature deals both first-strike and regular combat damage.) At the beginning of your upkeep, sacrifice Dragon Tyrant unless you pay {R}{R}{R}{R}. {R}: Dragon Tyrant gets +1/+0 until end of turn.

Flying Whenever Drakuseth, Maw of Flames attacks, it deals 4 damage to any target and 3 damage to each of up to two other targets.

Flying Whenever Dream Pillager deals combat damage to a player, exile that many cards from the top of your library. Until end of turn, you may cast spells from among those exiled cards.

Flying When Fire Dragon enters the battlefield, it deals damage to target creature equal to the number of Mountains you control.

Flying Whenever Flameblast Dragon attacks, you may pay {X}{R}. If you do, Flameblast Dragon deals X damage to any target.

Flying {1}{R}: Forgestoker Dragon deals 1 damage to target creature. That creature can't block this combat. Activate only if Forgestoker Dragon is attacking.

Bloodthirst 6 (If an opponent was dealt damage this turn, this creature enters the battlefield with six +1/+1 counters on it.) Flying

Flying Gadrak, the Crown-Scourge can't attack unless you control four or more artifacts. At the beginning of your end step, create a Treasure token for each nontoken creature that died this turn. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

Flying, haste {1}{R}: Hellkite Igniter gets +X/+0 until end of turn, where X is the number of artifacts you control.

Flying When Hoarding Dragon enters the battlefield, you may search your library for an artifact card, exile it, then shuffle. When Hoarding Dragon dies, you may put the exiled card into its owner's hand.

Flying When Knollspine Dragon enters the battlefield, you may discard your hand and draw cards equal to the damage dealt to target opponent this turn.

Flying Whenever another nontoken Dragon enters the battlefield under your control, create a 5/5 red Dragon creature token with flying. {1}{R}: Dragons you control get +1/+0 until end of turn.

Flying, trample Join forces — Whenever Mana-Charged Dragon attacks or blocks, each player starting with you may pay any amount of mana. Mana-Charged Dragon gets +X/+0 until end of turn, where X is the total amount of mana paid this way.

({R/P} can be paid with either {R} or 2 life.) Flying {R/P}: Moltensteel Dragon gets +1/+0 until end of turn.

Flying {R}: Each creature you control gets +1/+0 until end of turn.

Flying {1}{R}: Mordant Dragon gets +1/+0 until end of turn. Whenever Mordant Dragon deals combat damage to a player, you may have it deal that much damage to target creature that player controls.

Flying Whenever Scourge of Valkas or another Dragon enters the battlefield under your control, it deals X damage to any target, where X is the number of Dragons you control. {R}: Scourge of Valkas gets +1/+0 until end of turn.

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

Flying (This creature can't be blocked except by creatures with flying or reach.) {1}{R}: Shivan Hellkite deals 1 damage to any target.

Flying When Siege Dragon enters the battlefield, destroy all Walls your opponents control. Whenever Siege Dragon attacks, if defending player controls no Walls, it deals 2 damage to each creature without flying that player controls.

Flying When Spawn of Thraxes enters the battlefield, it deals damage to any target equal to the number of Mountains you control.

Flying {2}: Steel Hellkite gets +1/+0 until end of turn. {X}: Destroy each nonland permanent with mana value X whose controller was dealt combat damage by Steel Hellkite this turn. Activate only once each turn.

Flying, double strike When Terror of Mount Velus enters the battlefield, creatures you control gain double strike until end of turn.

Flying Whenever a Dragon you control becomes the target of a spell or ability an opponent controls, Thunderbreak Regent deals 3 damage to that player.

Flying Haste (This creature can attack and {T} as soon as it comes under your control.) When Thundermaw Hellkite enters the battlefield, it deals 1 damage to each creature with flying your opponents control. Tap those creatures.

Flying, haste Lieutenant — As long as you control your commander, Tyrant's Familiar gets +2/+2 and has "Whenever Tyrant's Familiar attacks, it deals 7 damage to target creature defending player controls."