Have (Arena)

Demanding Dragon

Flying
When Demanding Dragon enters, it deals 5 damage to target opponent unless that player sacrifices a creature.

Shock

Fiery Finish

Fiery Finish deals 7 damage to target creature.

Spit Flame

Spit Flame deals 4 damage to target creature.
Whenever a Dragon you control enters, you may pay {R}. If you do, return Spit Flame from your graveyard to your hand.

Charging Monstrosaur

Meteor Golem

When Meteor Golem enters, destroy target nonland permanent an opponent controls.

Goblin Instigator

When Goblin Instigator enters, create a 1/1 red Goblin creature token.

Sure Strike

Target creature gets +3/+0 and gains first strike until end of turn.

Sparktongue Dragon

Flying
When Sparktongue Dragon enters, you may pay {2}{R}. When you do, it deals 3 damage to any target.

Pyromantic Pilgrim

Haste (This creature can attack and {T} as soon as it comes under your control.)

Volcanic Dragon

Kargan Dragonrider

As long as you control a Dragon, Kargan Dragonrider has flying. (It can't be blocked except by creatures with flying or reach.)

Onakke Ogre

Burning Sun's Avatar

When Burning Sun's Avatar enters, it deals 3 damage to target opponent or planeswalker and 3 damage to up to one target creature.

Lathliss, Dragon Queen

Flying
Whenever another nontoken Dragon you control enters, create a 5/5 red Dragon creature token with flying.
{1}{R}: Dragons you control get +1/+0 until end of turn.

Havoc Devils

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)

Mountain

Viashino Pyromancer

When Viashino Pyromancer enters, it deals 2 damage to target player or planeswalker.