Draconic Roar

As an additional cost to cast this spell, you may reveal a Dragon card from your hand.
Draconic Roar deals 3 damage to target creature. If you revealed a Dragon card or controlled a Dragon as you cast this spell, Draconic Roar deals 3 damage to that creature's controller.

Summit Prowler

Scion of Ugin

Atarka Monument

{T}: Add {R} or {G}.
{4}{R}{G}: This artifact becomes a 4/4 red and green Dragon artifact creature with flying until end of turn.

Magmatic Chasm

Creatures without flying can't block this turn.

Tread Upon

Target creature gets +2/+2 and gains trample until end of turn.

Berserkers' Onslaught

Attacking creatures you control have double strike.

Dragonlord's Servant

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

Roast

Roast deals 5 damage to target creature without flying.

Lurking Arynx

Formidable — {2}{G}: Target creature blocks this creature this turn if able. Activate only if creatures you control have total power 8 or greater.

Savage Ventmaw

Flying
Whenever this creature attacks, add {R}{R}{R}{G}{G}{G}. Until end of turn, you don't lose this mana as steps and phases end.

Seismic Rupture

Seismic Rupture deals 2 damage to each creature without flying.

Tail Slash

Target creature you control deals damage equal to its power to target creature you don't control.

Epic Confrontation

Target creature you control gets +1/+2 until end of turn. It fights target creature you don't control. (Each deals damage equal to its power to the other.)

Mountain

Sarkhan's Rage

Sarkhan's Rage deals 5 damage to any target. If you control no Dragons, Sarkhan's Rage deals 2 damage to you.

Dragon Fodder

Create two 1/1 red Goblin creature tokens.

Glade Watcher

Defender
Formidable — {G}: This creature can attack this turn as though it didn't have defender. Activate only if creatures you control have total power 8 or greater.

Press the Advantage

Up to two target creatures each get +2/+2 and gain trample until end of turn.

Atarka Beastbreaker

Formidable — {4}{G}: This creature gets +4/+4 until end of turn. Activate only if creatures you control have total power 8 or greater.

Dragonloft Idol

As long as you control a Dragon, this creature gets +1/+1 and has flying and trample.

Evolving Wilds

{T}, Sacrifice this land: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Hardened Berserker

Whenever this creature attacks, the next spell you cast this turn costs {1} less to cast.

Stampeding Elk Herd

Formidable — Whenever this creature attacks, if creatures you control have total power 8 or greater, creatures you control gain trample until end of turn.

Sabertooth Outrider

Trample
Formidable — Whenever this creature attacks, if creatures you control have total power 8 or greater, this creature gains first strike until end of turn.

Harbinger of the Hunt

Flying
{2}{R}: This creature deals 1 damage to each creature without flying.
{2}{G}: This creature deals 1 damage to each other creature with flying.