Mountain

Raging Kronch

Jackal Familiar

Jackal Familiar can't attack or block alone.

Mogg Flunkies

Mogg Flunkies can't attack or block alone.

Brute Force

Target creature gets +3/+3 until end of turn.

Keldon Marauders

Vanishing 2 (This creature enters with two time counters on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.)
When Keldon Marauders enters or leaves the battlefield, it deals 1 damage to target player or planeswalker.

Mogg Conscripts

Mogg Conscripts can't attack unless you've cast a creature spell this turn.

Bloodcrazed Goblin

Bloodcrazed Goblin can't attack unless an opponent has been dealt damage this turn.

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Jackal Pup

Whenever Jackal Pup is dealt damage, it deals that much damage to you.

Heartfire

As an additional cost to cast this spell, sacrifice a creature or planeswalker.
Heartfire deals 4 damage to any target.

Mardu Scout

Dash {1}{R} (You may cast this spell for its dash cost. If you do, it gains haste, and it's returned from the battlefield to its owner's hand at the beginning of the next end step.)