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.

Kargan Dragonrider

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

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.

Volcanic Dragon

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.

Mountain

Sure Strike

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

Meteor Golem

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

Sparktongue Dragon

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

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.

Pyromantic Pilgrim

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

Fiery Finish

Fiery Finish deals 7 damage to target creature.

Viashino Pyromancer

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

Shock

Havoc Devils

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