Mountain

Act of Treason

Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn. (It can attack and {T} this turn.)

Volcanic Dragon

Electrify

Electrify deals 4 damage to target creature.

Sarkhan's Whelp

Flying (This creature can't be blocked except by creatures with flying or reach.)
Whenever you activate an ability of a Sarkhan planeswalker, Sarkhan's Whelp deals 1 damage to any target.

Viashino Pyromancer

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

Trumpet Blast

Attacking creatures get +2/+0 until end of turn.

Hostile Minotaur

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

Shivan Dragon

Flying
{R}: This creature gets +1/+0 until end of turn.

Lightning Strike

Lightning Strike deals 3 damage to any target.

Sarkhan, Dragonsoul

+2: Sarkhan, Dragonsoul deals 1 damage to each opponent and each creature your opponents control.
−3: Sarkhan, Dragonsoul deals 4 damage to target player or planeswalker.
−9: Search your library for any number of Dragon creature cards, put them onto the battlefield, then shuffle.

Onakke Ogre

Meteor Golem

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

Thud

As an additional cost to cast this spell, sacrifice a creature.
Thud deals damage equal to the sacrificed creature's power to any target.

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.

Shock

Sarkhan's Dragonfire

Sarkhan's Dragonfire deals 3 damage to any target.
Look at the top five cards of your library. You may reveal a red card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

Fiery Finish

Fiery Finish deals 7 damage to target creature.

Goblin Motivator

{T}: Target creature gains haste until end of turn. (It can attack and {T} this turn.)

Sparktongue Dragon

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