Ainok Bond-Kin

Outlast {1}{W} ({1}{W}, {T}: Put a +1/+1 counter on this creature. Outlast only as a sorcery.)
Each creature you control with a +1/+1 counter on it has first strike.

Supply Runners

When Supply Runners enters, put a +1/+1 counter on each other creature you control.

Boros Guildgate

Boros Guildgate enters tapped.
{T}: Add {R} or {W}.

Igneous Cur

{1}{R}: Igneous Cur gets +2/+0 until end of turn.

Pack Mastiff

{1}{R}: Each creature you control named Pack Mastiff gets +1/+0 until end of turn.

Wind-Scarred Crag

Wind-Scarred Crag enters tapped.
When Wind-Scarred Crag enters, you gain 1 life.
{T}: Add {R} or {W}.

Charge

Creatures you control get +1/+1 until end of turn.

Pack Leader

Other Dogs you control get +1/+1.
Whenever Pack Leader attacks, prevent all combat damage that would be dealt this turn to Dogs you control.

Plains

Mountain

Alpine Watchdog

Vigilance (Attacking doesn't cause this creature to tap.)

Ferocity of the Wilds

Attacking non-Human creatures you control get +1/+0 and have trample.

Flame Sweep

Flame Sweep deals 2 damage to each creature except for creatures you control with flying.

Thrill of Possibility

As an additional cost to cast this spell, discard a card.
Draw two cards.

Alpine Houndmaster

When Alpine Houndmaster enters, you may search your library for a card named Alpine Watchdog and/or a card named Igneous Cur, reveal them, put them into your hand, then shuffle.
Whenever Alpine Houndmaster attacks, it gets +X/+0 until end of turn, where X is the number of other attacking creatures.