Commander creatures you own have "At the beginning of your end step, if a source you controlled dealt 5 or more damage this turn, create a 4/4 red Dragon creature token with flying."

{T}: Add one mana of any color in your commander's color identity. Sacrifice Commander's Sphere: Draw a card.

Indestructible {T}: Add one mana of any color.

Fire Diamond enters the battlefield tapped. {T}: Add {R}.

Whenever you cast an instant or sorcery spell, put a charge counter on Geistflame Reservoir. {1}{R}, {T}, Remove any number of charge counters from Geistflame Reservoir: It deals that much damage to any target. {1}{R}, {T}: Exile the top card of your library. You may play that card this turn.

As Heraldic Banner enters the battlefield, choose a color. Creatures you control of the chosen color get +1/+0. {T}: Add one mana of the chosen color.

All Swamps are 1/1 black creatures that are still lands.

{1}, {T}, Sacrifice Moonsilver Key: Search your library for an artifact card with a mana ability or a basic land card, reveal it, put it into your hand, then shuffle.

{T}: Add one mana of any color. At the beginning of your upkeep, put a night counter on Replicating Ring. Then if it has eight or more night counters on it, remove all of them and create eight colorless snow artifact tokens named Replicated Ring with "{T}: Add one mana of any color."

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

Whenever you cast a red spell or a Mountain enters the battlefield under your control, you gain 1 life.

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

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

This spell costs {X} less to cast, where X is the greatest number of artifacts an opponent controls. Flying, trample, haste Whenever Cavern-Hoard Dragon deals combat damage to a player, you create a Treasure token for each artifact that player controls.

Flying, haste You may exert Glorybringer as it attacks. When you do, it deals 4 damage to target non-Dragon creature an opponent controls. (An exerted creature won't untap during your next untap step.)

Flying, haste Whenever Hellkite Charger attacks, you may pay {5}{R}{R}. If you do, untap all attacking creatures and after this phase, there is an additional combat phase.

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 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 When Opportunistic Dragon enters the battlefield, choose target Human or artifact an opponent controls. For as long as Opportunistic Dragon remains on the battlefield, gain control of that permanent, it loses all abilities, and it can't attack or block.

Flying Whenever Purifying Dragon attacks, it deals 1 damage to target creature defending player controls. If that creature is a Zombie, Purifying Dragon deals 2 damage to it instead.

Flying When Rapacious Dragon enters the battlefield, create two Treasure tokens. (They're artifacts with "{T}, Sacrifice this artifact: Add one mana of any color.")

Flying Fire Breath — When Red Dragon enters the battlefield, it deals 4 damage to each opponent.

Flying When Ryusei, the Falling Star dies, it deals 5 damage to each creature without flying.

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

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.

Nonbasic lands are Mountains.

Enchant player Whenever enchanted player casts a spell other than the first spell they cast each turn or copies a spell, Curse of Shaken Faith deals 2 damage to them.

At the beginning of each player's upkeep, Roiling Vortex deals 1 damage to them. Whenever a player casts a spell, if no mana was spent to cast that spell, Roiling Vortex deals 5 damage to that player. {R}: Your opponents can't gain life this turn.

{T}: Add {C}. {2}, {T}: Each player draws a card.

({T}: Add {R}.)

Destroy all white permanents.

Destroy all Islands.

Any player may have Breaking Point deal 6 damage to them. If no one does, destroy all creatures. Creatures destroyed this way can't be regenerated.

Dragon's Approach deals 3 damage to each opponent. You may exile Dragon's Approach and four cards named Dragon's Approach from your graveyard. If you do, search your library for a Dragon creature card, put it onto the battlefield, then shuffle. A deck can have any number of cards named Dragon's Approach.

Target player sacrifices a land. Threshold — Each player sacrifices all lands they control instead if seven or more cards are in your graveyard.

Destroy all Plains.

Discover 10. If the discovered card's mana value is less than 10, create a number of tapped Treasure tokens equal to the difference. (To discover 10, exile cards from the top of your library until you exile a nonland card with mana value 10 or less. Cast it without paying its mana cost or put it into your hand. Put the rest on the bottom in a random order.)

Steam Blast deals 2 damage to each creature and each player.

Destroy target land.

Tremor deals 1 damage to each creature without flying.