Have (Arena)

Viashino Pyromancer

When this creature enters, it deals 2 damage to target player or planeswalker.

Onakke Ogre

Mountain

Kargan Dragonrider

As long as you control a Dragon, this creature has flying.

Fiery Finish

Fiery Finish deals 7 damage to target creature.

Sure Strike

Target creature gets +3/+0 and gains first strike until end of turn. (It deals combat damage before creatures without first strike.)

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.

Pyromantic Pilgrim

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

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.

Shock

Goblin Instigator

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

Demanding Dragon

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

Charging Monstrosaur

Meteor Golem

When this creature enters, destroy target nonland permanent an opponent controls.

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.

Havoc Devils

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

Sparktongue Dragon

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