Boros Locket

{T}: Add {R} or {W}.
{R/W}{R/W}{R/W}{R/W}, {T}, Sacrifice Boros Locket: Draw two cards.

Mountain

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.

Igneous Cur

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

Marble Diamond

Marble Diamond enters tapped.
{T}: Add {W}.

Plains

Alpine Watchdog

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

Fire Diamond

Fire Diamond enters tapped.
{T}: Add {R}.

Sparring Collar

Equipped creature has first strike.
{R}{R}: Attach Sparring Collar to target creature you control.
Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)