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

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, trample

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

Destroy target permanent. Its controller creates a 3/3 green Beast creature token.

This spell costs {1} less to cast for each creature on the battlefield.

Blasphemous Act deals 13 damage to each creature.

{T}: Add {R}. If that mana is spent on a Dragon creature spell, it gains haste until end of turn.

The owner of target permanent shuffles it into their library, then reveals the top card of their library. If it's a permanent card, they put it onto the battlefield.

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

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.

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.

Trample

Whenever a source you control deals 5 or more damage to a player, draw a card.

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

At the beginning of your upkeep, if you control six or more lands, create a 5/5 red Dragon creature token with flying.

Dragon spells you cast cost {2} less to cast.

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.

Whenever a creature you control with power 3 or greater enters, draw a card.

Creatures you control have haste.

Sacrifice Fires of Yavimaya: Target creature gets +2/+2 until end of turn.

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.

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

Creatures you control have trample.

Whenever a creature you control with power 4 or greater enters, draw a card.

{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.

Flash

Enchant creature

Enchanted creature gets +3/+3.

Enchanted creature's controller may have it assign its combat damage as though it weren't blocked.

{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.)

Choose one. If you control a commander as you cast this spell, you may choose both.

• Breathe Flame -- Klauth's Will deals X damage to each creature without flying.

• Smash Relics -- Destroy up to X target artifacts and/or enchantments.

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.

{T}: Add {U}. When you spend this mana to cast a Dragon creature spell, scry 2. (Look at the top two cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)

Flying

Whenever you cast an Adventure or Dragon spell, Lozhan, Dragons' Legacy deals damage equal to that spell's mana value to any target that isn't a commander.

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.

Hideaway 4 (When this land enters, look at the top four cards of your library, exile one face down, then put the rest on the bottom in a random order.)

Mosswort Bridge enters tapped.

{T}: Add {G}.

{G}, {T}: You may play the exiled card without paying its mana cost if creatures you control have total power 10 or greater.

Counter target noncreature spell.

Path of Ancestry enters 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.)

Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

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.

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.

Flying

When Skyline Despot enters the battlefield, you become the monarch.

At the beginning of your upkeep, if you're the monarch, create a 5/5 red Dragon creature token with flying.

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

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.

(As this Saga enters and after your draw step, add a lore counter.)

I, II -- You gain 2 life. Look at the top three cards of your library. Exile one of them face down with a hatching counter on it, then put the rest on the bottom of your library in any order.

III -- Exile this Saga, then return it to the battlefield transformed under your control.

Whenever Dragon-Kami's Egg or a Dragon you control dies, you may cast a creature spell from among cards you own in exile with hatching counters on them without paying its mana cost.

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.

Double the power of target creature until end of turn.

Kicker {3} (You may pay an additional {3} as you cast this spell.)

Flying

When Verix Bladewing enters the battlefield, if it was kicked, create Karox Bladewing, a legendary 4/4 red Dragon creature token with flying.