Commander creatures you own have "The first Dragon spell you cast each turn costs {2} less to cast."

Whenever a Dragon enters the battlefield under your control, put a gold counter on Dragon's Hoard. {T}, Remove a gold counter from Dragon's Hoard: Draw a card. {T}: Add one mana of any color.

{T}: Add {G}. When you spend this mana to cast a Dragon creature spell, it enters the battlefield with an additional +1/+1 counter on it and gains hexproof until your next turn. (It can't be the target of spells or abilities your opponents control.)

{T}: Add {C}{C}.

As Urza's Incubator enters the battlefield, choose a creature type. Creature spells of the chosen type cost {2} less to cast.

Flying Whenever Ancient Brass Dragon deals combat damage to a player, roll a d20. When you do, put any number of target creature cards with total mana value X or less from graveyards onto the battlefield under your control, where X is the result.

Flying Whenever Ancient Bronze Dragon deals combat damage to a player, roll a d20. When you do, put X +1/+1 counters on each of up to two target creatures, where X is the result.

Armored Scrapgorger gets +3/+0 as long as it has three or more oil counters on it. {T}: Add one mana of any color. Whenever Armored Scrapgorger becomes tapped, exile target card from a graveyard and put an oil counter on Armored Scrapgorger.

Flying Acid Breath — When Black Dragon enters the battlefield, target creature an opponent controls gets -3/-3 until end of turn.

Bladewing's Thrall has flying as long as you control a Dragon. When a Dragon enters the battlefield, you may return Bladewing's Thrall from your graveyard to the battlefield.

Flying Whenever a Dragon you control dies while Boneyard Scourge is in your graveyard, you may pay {1}{B}. If you do, return Boneyard Scourge from your graveyard to the battlefield.

Flying When Destructor Dragon dies, destroy target noncreature permanent.

When Draconic Muralists dies, you may search your library for a Dragon card, reveal it, put it into your hand, then shuffle.

This spell costs {X} less to cast, where X is the total mana value of Dragons you control. Flying, trample {2}{G}, Sacrifice a land: Return Earthquake Dragon from your graveyard to your hand.

Flash Flying Ebondeath, Dracolich enters the battlefield tapped. You may cast Ebondeath, Dracolich from your graveyard if a creature not named Ebondeath, Dracolich died this turn.

Creature spells you cast with power 4 or greater cost {2} less to cast. Whenever Goreclaw, Terror of Qal Sisma attacks, each creature you control with power 4 or greater gets +1/+1 and gains trample until end of turn.

Changeling (This card is every creature type.) When Graveshifter enters the battlefield, you may return target creature card from your graveyard to your hand.

Flying When Jugan, the Rising Star dies, you may distribute five +1/+1 counters among any number of target creatures.

Flying, menace When Junji, the Midnight Sky dies, choose one — • Each opponent discards two cards and loses 2 life. • Put target non-Dragon creature card from a graveyard onto the battlefield under your control. You lose 2 life.

Flying When Kokusho, the Evening Star dies, each opponent loses 5 life. You gain life equal to the life lost this way.

Flying, deathtouch When Kura, the Boundless Sky dies, choose one — • Search your library for up to three land cards, reveal them, put them into your hand, then shuffle. • Create an X/X green Spirit creature token, where X is the number of lands you control.

Deathtouch, lifelink {T}: Add one mana of any color.

{T}: Add one mana of any color. {T}: Target land you control becomes a 3/3 Elemental creature with haste until end of turn. It's still a land. Activate only as a sorcery.

Changeling (This card is every creature type.) When Masked Vandal enters the battlefield, you may exile a creature card from your graveyard. If you do, exile target artifact or enchantment an opponent controls.

Flying When Noxious Dragon dies, you may destroy target creature with mana value 3 or less.

{T}: Add one mana of any color. Suspend 2—{G} (Rather than cast this card from your hand, you may pay {G} and exile it with two time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost. It has haste.)

When Satyr Wayfinder enters the battlefield, reveal the top four cards of your library. You may put a land card from among them into your hand. Put the rest into your graveyard.

Flying You may cast Scourge of Nel Toth from your graveyard by paying {B}{B} and sacrificing two creatures rather than paying its mana cost.

{T}: Add {B} or {G}. {T}: Mill two cards.

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.

When Stitcher's Supplier enters the battlefield or dies, mill three cards.

When Deadbridge Chant enters the battlefield, mill ten cards. At the beginning of your upkeep, choose a card at random in your graveyard. If it's a creature card, put it onto the battlefield. Otherwise, put it into your hand.

Enchant creature Enchanted creature gets +1/+1 and has trample. When a creature with mana value 6 or greater enters the battlefield, you may return Dragon Fangs from your graveyard to the battlefield attached to that creature.

Enchant creature Enchanted creature gets +1/+0 and has fear. (It can't be blocked except by artifact creatures and/or black creatures.) When a creature with mana value 6 or greater enters the battlefield, you may return Dragon Shadow from your graveyard to the battlefield attached to that creature.

As Frontier Siege enters the battlefield, choose Khans or Dragons. • Khans — At the beginning of each of your main phases, add {G}{G}. • Dragons — Whenever a creature with flying enters the battlefield under your control, you may have it fight target creature you don't control.

As Palace Siege enters the battlefield, choose Khans or Dragons. • Khans — At the beginning of your upkeep, return target creature card from your graveyard to your hand. • Dragons — At the beginning of your upkeep, each opponent loses 2 life and you gain 2 life.

{B}, Discard a creature card: Return target creature card from your graveyard to your hand.

Up to one target creature gets -X/-X until end of turn. If X is 5 or more, return a creature card with mana value X or less from your graveyard to the battlefield tapped.

Reveal the top five cards of your library. You may put a creature or land card from among them into your hand. Put the rest into your graveyard.

This spell costs {1} less to cast for each creature card in your graveyard. Exile target creature or planeswalker.

Choose one — • Return target creature card from your graveyard to your hand. • Return two target creature cards that share a creature type from your graveyard to your hand.

Each opponent sacrifices a creature or planeswalker with the highest mana value among creatures and planeswalkers they control.

Blooming Marsh enters the battlefield tapped unless you control two or fewer other lands. {T}: Add {B} or {G}.

{T}: Add one mana of any color in your commander's color identity.

({T}: Add {G}.)

Golgari Rot Farm enters the battlefield tapped. When Golgari Rot Farm enters the battlefield, return a land you control to its owner's hand. {T}: Add {B}{G}.

{T}: Add {C}. {2}{B}{G}, {T}, Sacrifice a creature: Draw a card.

({T}: Add {B} or {G}.) Haunted Mire enters the battlefield tapped.

Hissing Quagmire enters the battlefield tapped. {T}: Add {B} or {G}. {1}{B}{G}: Hissing Quagmire becomes a 2/2 black and green Elemental creature with deathtouch until end of turn. It's still a land.

{T}: Add {C}. {T}: Add {B} or {G}. Llanowar Wastes deals 1 damage to you.

As Necroblossom Snarl enters the battlefield, you may reveal a Swamp or Forest card from your hand. If you don't, Necroblossom Snarl enters the battlefield tapped. {T}: Add {B} or {G}.

({T}: Add {B}.)

{T}: Add {C}. {3}, {T}: Surveil 1. (Look at the top card of your library. You may put it into your graveyard.)

Witherbloom Campus enters the battlefield tapped. {T}: Add {B} or {G}. {4}, {T}: Scry 1.

Remove all counters from all permanents and exile all tokens.

As an additional cost to cast this spell, sacrifice a creature. Return a creature card from your graveyard to the battlefield, then return another creature card from your graveyard to your hand.

Choose one — • Destroy all Dragon creatures. • Destroy all non-Dragon creatures.

Each player sacrifices a creature or planeswalker. If you sacrificed a permanent this way, you may return another permanent card from your graveyard to your hand.

You may mill three cards. Then return up to one creature card and up to one land card from your graveyard to your hand. (To mill a card, put the top card of your library into your graveyard.)

Return target card from your graveyard to your hand. Flashback {4}{G} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Return target creature card from your graveyard to the battlefield. If it's a Dragon, put two +1/+1 counters on it.

Each player sacrifices a creature.

Each player sacrifices a creature. If you sacrificed a creature this way, you may return another permanent card from your graveyard to the battlefield.

Bargain (You may sacrifice an artifact, enchantment, or token as you cast this spell.) Look at the top twenty cards of your library. You may reveal up to two creature cards from among them. If this spell was bargained, put the revealed cards onto the battlefield. Otherwise, put the revealed cards into your hand. Then shuffle.

Kicker {1}{G} (You may pay an additional {1}{G} as you cast this spell.) Return target creature card from your graveyard to your hand. You gain 2 life. If this spell was kicked, return another target permanent card from your graveyard to your hand.