Counter target noncreature spell. Its controller creates two Treasure tokens. (They're artifacts with "{T}, Sacrifice this artifact: Add one mana of any color.")

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.

Flying

Whenever Ancient Copper Dragon deals combat damage to a player, roll a d20. You create a number of Treasure tokens equal to the result.

Flying

Whenever Ancient Silver Dragon deals combat damage to a player, roll a d20. Draw cards equal to the result. You have no maximum hand size for the rest of the game.

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

Flying, trample

Whenever a Dragon you control attacks, it gains double strike until end of turn.

Flying

Whenever Balefire Dragon deals combat damage to a player, it deals that much damage to each creature that player controls.

Flying

{T}: Add one mana of any color.

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

{T}: Add {C}.

{1}, {T}: Put a storage counter on Crucible of the Spirit Dragon.

{T}, Remove X storage counters from Crucible of the Spirit Dragon: Add X mana in any combination of colors. Spend this mana only to cast Dragon spells or activate abilities of Dragons.

Choose one --

• Destroy all Dragon creatures.

• Destroy all non-Dragon creatures.

Search your library for up to two basic land cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.

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.")

Flying, trample

Whenever Decadent Dragon attacks, create a Treasure token.

---

Exile the top two cards of target opponent's library face down. You may look at and play those cards for as long as they remain exiled.

At the beginning of your upkeep, reveal the top card of your library. If it's a creature card that shares a creature type with a creature you control, you may cast it without paying its mana cost. If you don't cast it, put it on the bottom of your library.

Whenever a creature with flying enters the battlefield under your control, it gains haste until end of turn.

Whenever a Dragon enters the battlefield under your control, it deals X damage to any target, where X is the number of Dragons you control.

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.

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

Dragonskull Summit enters the battlefield tapped unless you control a Swamp or a Mountain.

{T}: Add {B} or {R}.

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.

Return any number of permanent cards with different names from your graveyard to the battlefield.

{T}: Add one mana of any color that a land an opponent controls could produce.

Search your library for a Plains, Island, Swamp, or Mountain card, put it onto the battlefield tapped, then shuffle.

You may pay {W}{U}{B}{R}{G} rather than pay the mana cost for spells that you cast.

When Garruk's Uprising enters the battlefield, if you control a creature with power 4 or greater, draw a card.

Creatures you control have trample. (They can deal excess combat damage to the player or planeswalker they're attacking.)

Whenever a creature with power 4 or greater enters the battlefield under your control, draw a card.

Each spell you cast that's red or green costs {1} less to cast.

Flying, haste

Whenever Goldspan Dragon attacks or becomes the target of a spell, create a Treasure token.

Treasures you control have "{T}, Sacrifice this artifact: Add two mana of any one color."

{T}: Add {C}.

{T}: Add one mana of any color. Spend this mana only to cast a Dragon creature spell.

{2}, {T}, Sacrifice Haven of the Spirit Dragon: Return target Dragon creature card or Ugin planeswalker card from your graveyard to your hand.

As Herald's Horn enters the battlefield, choose a creature type.

Creature spells you cast of the chosen type cost {1} less to cast.

At the beginning of your upkeep, look at the top card of your library. If it's a creature card of the chosen type, you may reveal it and put it into your hand.

Permanents you control gain hexproof and indestructible until end of turn.

({T}: Add {G}, {U}, or {R}.)

Ketria Triome enters the battlefield tapped.

Cycling {3} ({3}, Discard this card: Draw a card.)

As Kindred Discovery enters the battlefield, choose a creature type.

Whenever a creature you control of the chosen type enters the battlefield or attacks, draw a card.

Flying, haste

Whenever Klauth, Unrivaled Ancient attacks, add X mana in any combination of colors, where X is the total power of attacking creatures. Spend this mana only to cast spells. Until end of turn, you don't lose this mana as steps and phases end.

Search your library for up to two basic land cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.

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.

{T}: Add {C}.

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

Flying, ward {2}

Whenever another nontoken Dragon enters the battlefield under your control, create a token that's a copy of it, except the token isn't legendary.

{1}{G}, {T}: You may put a creature card from your hand onto the battlefield.

---

Mill five cards, then return a creature card milled this way to your hand. (Then exile this card. You may cast the artifact later from exile.)

Changeling (This card is every creature type.)

As Morophon, the Boundless enters the battlefield, choose a creature type.

Spells of the chosen type you cast cost {W}{U}{B}{R}{G} less to cast. This effect reduces only the amount of colored mana you pay.

Other creatures you control of the chosen type get +1/+1.

Search your library for a Forest card, put that card onto the battlefield, then shuffle.

Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.)

{T}: Add {G}, {W}, or {U}.

Flying

Whenever a creature you control deals combat damage to a player, create that many Treasure tokens.

Path of Ancestry enters the battlefield tapped.

{T}: Add one mana of any color in your commander's color identity. When that mana is spent to cast a creature spell that shares a creature type with your commander, scry 1. (Look at the top card of your library. You may put that card on the bottom.)

{T}: Add {C}.

{T}: Add one mana of any color. Spend this mana only to cast a legendary spell.

{T}: Add one mana of any color among legendary permanents you control.

{3}, {T}, Exile Plaza of Heroes: Target legendary creature gains hexproof and indestructible until end of turn.

Flying

Whenever you cast a spell, put a +1/+1 counter on Ramos, Dragon Engine for each of that spell's colors.

Remove five +1/+1 counters from Ramos: Add {W}{W}{U}{U}{B}{B}{R}{R}{G}{G}. Activate only once each turn.

{T}: Add {G}, {U}, or {R}.

Morph {2} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

When Rattleclaw Mystic is turned face up, add {G}{U}{R}.

{T}: Add one mana of any type that a land you control could produce.

Whenever an opponent casts a spell, you may draw a card unless that player pays {1}.

Creature spells you control can't be countered.

Nontoken creatures you control have riot. (They enter the battlefield with your choice of a +1/+1 counter or haste.)

Flying, ward {2}

Other Dragons you control have ward {2}.

At the beginning of your end step, if a creature or planeswalker an opponent controlled was dealt excess damage this turn, create a 4/4 red Dragon creature token with flying.

Menace

{T}: Add two mana in any combination of colors. Spend this mana only to cast Dragon creature spells.

Once during each of your turns, you may cast a Dragon creature spell from your graveyard.

Whenever you cast a Dragon creature spell from your graveyard, it gains "When this creature dies, exile it."

Rockfall Vale enters the battlefield tapped unless you control two or more other lands.

{T}: Add {R} or {G}.

Rootbound Crag enters the battlefield tapped unless you control a Mountain or a Forest.

{T}: Add {R} or {G}.

Whenever you cast a creature spell with power 4, 5, or 6, Sarkhan's Unsealing deals 4 damage to any target.

Whenever you cast a creature spell with power 7 or greater, Sarkhan's Unsealing deals 4 damage to each opponent and each creature and planeswalker they control.

+1: You may discard a card. If you do, draw a card.

+1: Add two mana in any combination of colors. Spend this mana only to cast Dragon spells.

-7: Create four 5/5 red Dragon creature tokens with flying.

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

Whenever a Dragon enters the battlefield under your control, you may have Sarkhan, Soul Aflame become a copy of it until end of turn, except its name is Sarkhan, Soul Aflame and it's legendary in addition to its other types.

Flying

Whenever Savage Ventmaw attacks, add {R}{R}{R}{G}{G}{G}. Until end of turn, you don't lose this mana as steps and phases end.

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

Dethrone (Whenever this creature attacks the player with the most life or tied for most life, put a +1/+1 counter on it.)

Whenever Scourge of the Throne attacks for the first time each turn, if it's attacking the player with the most life or tied for most life, untap all attacking creatures. After this phase, there is an additional combat phase.

As Secluded Courtyard enters the battlefield, choose a creature type.

{T}: Add {C}.

{T}: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type or activate an ability of a creature source of the chosen type.

Whenever another creature enters the battlefield, its controller may draw a card if its power is greater than each other creature's power.

{G}, {T}: Add X mana in any combination of colors, where X is the greatest power among creatures you control.

The first creature spell you cast each turn costs {2} less to cast.

Whenever an opponent casts their first noncreature spell each turn, Shadow in the Warp deals 2 damage to that player.

Search your library for up to two Forest cards, put them onto the battlefield, then shuffle.

{R}: You may put a creature card from your hand onto the battlefield. That creature gains haste. Sacrifice the creature at the beginning of the next end step.

{T}: Add three mana of any one color. Spend this mana only to cast creature spells.

Spire Garden enters the battlefield tapped unless you have two or more opponents.

{T}: Add {R} or {G}.

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.

({T}: Add {R} or {G}.)

As Stomping Ground enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

Creatures you control have haste.

Whenever a creature with power 4 or greater enters the battlefield under your control, you may draw a card.

Flying

Spells your opponents cast that target Terror of the Peaks cost an additional 3 life to cast.

Whenever another creature enters the battlefield under your control, Terror of the Peaks deals damage equal to that creature's power to any target.

Eminence -- As long as The Ur-Dragon is in the command zone or on the battlefield, other Dragon spells you cast cost {1} less to cast.

Flying

Whenever one or more Dragons you control attack, draw that many cards, then you may put a permanent card from your hand onto the battlefield.

Trample

Whenever Thrakkus the Butcher attacks, double the power of each Dragon you control until end of turn.

Search your library for a Forest card, put it onto the battlefield, then shuffle.

Flying

When Tiamat enters the battlefield, if you cast it, search your library for up to five Dragon cards not named Tiamat that each have different names, reveal them, put them into your hand, then shuffle.

As Unclaimed Territory enters the battlefield, choose a creature type.

{T}: Add {C}.

{T}: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type.

When Up the Beanstalk enters the battlefield and whenever you cast a spell with mana value 5 or greater, draw a card.

As Urza's Incubator enters the battlefield, choose a creature type.

Creature spells of the chosen type cost {2} less to cast.

Flying

Whenever a Dragon you control attacks, create a 6/6 red Dragon creature token with flying.

({T}: Add {B}, {R}, or {G}.)

Ziatora's Proving Ground enters the battlefield tapped.

Cycling {3} ({3}, Discard this card: Draw a card.)