Borderland Marauder

Whenever Borderland Marauder attacks, it gets +2/+0 until end of turn.

Lightning Strike

Lightning Strike deals 3 damage to any target.

Scorching Shot

Scorching Shot deals 5 damage to target creature.

Viashino Pyromancer

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

Monastery Swiftspear

Haste
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

Thundermaw Hellkite

Flying
Haste (This creature can attack and {T} as soon as it comes under your control.)
When Thundermaw Hellkite enters, it deals 1 damage to each creature with flying your opponents control. Tap those creatures.

Mountain

Reckless Impulse

Exile the top two cards of your library. Until the end of your next turn, you may play those cards.

Shock

Flametongue Kavu

When Flametongue Kavu enters, it deals 4 damage to target creature.

Fireball

This spell costs {1} more to cast for each target beyond the first.
Fireball deals X damage divided evenly, rounded down, among any number of targets.

Fervent Cathar

Haste
When Fervent Cathar enters, target creature can't block this turn.

Coordinated Assault

Up to two target creatures each get +1/+0 and gain first strike until end of turn. (They deal combat damage before creatures without first strike.)