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.)

Scorching Dragonfire

Scorching Dragonfire deals 3 damage to target creature or planeswalker. If that creature or planeswalker would die this turn, exile it instead.

Shivan Dragon

Flying (This creature can't be blocked except by creatures with flying or reach.)
{R}: Shivan Dragon gets +1/+0 until end of turn.

Dragon Hatchling

Flying
{R}: Dragon Hatchling gets +1/+0 until end of turn.

Red Dragon

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

Dragonlord's Servant

Dragon spells you cast cost {1} less to cast.

Furnace Whelp

Flying
{R}: Furnace Whelp gets +1/+0 until end of turn.

Bathe in Dragonfire

Bathe in Dragonfire deals 4 damage to target creature.

Plundering Predator

Flying
When Plundering Predator enters, you may discard a card. If you do, draw a card.

Mountain

Shivan Fire

Kicker {4} (You may pay an additional {4} as you cast this spell.)
Shivan Fire deals 2 damage to target creature. If this spell was kicked, it deals 4 damage instead.