Flying
Unleash
This creature has trample as long as it has a +1/+1 counter on it.

(You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.)
Once each turn, you may pay rather than pay the mana cost for a spell you cast from exile.

Whenever this creature enters or attacks, discard a card, then seek a nonland card. When you discard a card this way, this creature deals damage equal to the discarded card's mana value to any target.

When Clive enters, you may discard your hand, then draw cards equal to your devotion to red.
, : Exile Clive, then return it to the battlefield transformed under its owner's control. Activate only as a sorcery.

Whenever this creature is dealt damage, it deals that much damage to each player.

First strike
When this creature enters, target opponent may have you draw three cards. If the player doesn't, you mill three cards, then this creature deals damage to that player equal to the total mana value of those cards.

Flying
When this creature enters, gain control of target creature an opponent controls until end of turn. Untap that creature. It gains haste until end of turn.

Mountaincycling
Backup 2
Trample

Echo
When this creature enters, it deals 4 damage to each other creature.

Enchant creature
Curse of the Fire Penguin consumes and confuses enchanted creature.

Creatures you control have haste.

Each player other than target player creates a 5/5 red Dragon creature token with flying.

Destroy any number of target creatures. For each creature destroyed this way, its controller creates a 4/4 red Dragon creature token with flying.

This creature gets +2/+0 for each Mountain you control.
Whenever you attack with creatures with total power 12 or greater for the first time each turn, untap all attacking creatures. After this phase, there is an additional combat phase.

Create four 1/1 red Devil creature tokens. They have "When this token dies, it deals 1 damage to any target."

When this creature enters, creatures you control get +1/+0 and gain haste until end of turn.
Foretell

Flying, haste
Whenever this creature attacks while saddled, it deals 2 damage to any target.
Saddle 3

: Create a 5/5 red Dragon creature token with flying.

Whenever you cast a Dragon or noncreature spell, draft a card from Dragon Typhoon's spellbook and put it onto the battlefield.
Channel — , Discard this card: Create a 4/4 red Dragon creature token with flying.

Dragon Typhoon's spellbook includes the following cards:
• Thunderbreak Regent
• Stormscale Scion
• Magmatic Hellkite
• Boltwing Marauder
• Neriv, Heart of the Storm
• Caldera Pyremaw
• Thundermane Dragon

Siege Monster — When this creature enters, roll a d20.
1-9 | Each player sacrifices a permanent of their choice.
10-19 | Each opponent sacrifices a permanent of their choice.
20 | Each opponent sacrifices two permanents of their choice.

Whenever you cast a Spirit or Arcane spell, this creature deals 2 damage to each creature without flying.

Create a 4/4 red Dragon Elemental creature token with flying and prowess.
Storm

Flash
This spell costs less to cast for each attacking creature you control.
When Embercleave enters, attach it to target creature you control.
Equipped creature gets +1/+1 and has double strike and trample.
Equip

Whenever Etali attacks, exile the top card of each player's library, then you may cast any number of spells from among those cards without paying their mana costs.

When this creature enters, it deals 4 damage to each opponent.
Delirium — Whenever a source you control deals noncombat damage to an opponent, if there are four or more card types among cards in your graveyard, this creature deals that amount of damage to target creature that player controls.

First strike
If a source would deal damage to an opponent, it deals double that damage to that player instead.