Plains

Thriving Heath

This land enters tapped. As it enters, choose a color other than white.
{T}: Add {W} or one mana of the chosen color.

Release the Dogs

Create four 1/1 white Dog creature tokens.

Rambunctious Mutt

When this creature enters, destroy target artifact or enchantment an opponent controls.

Supply Runners

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

Affa Guard Hound

Flash (You may cast this spell any time you could cast an instant.)
When this creature enters, target creature gets +0/+3 until end of turn.

Encampment Keeper

First strike
{7}{W}, {T}, Sacrifice this creature: Creatures you control get +2/+2 until end of turn.

Dauntless Onslaught

Up to two target creatures each get +2/+2 until end of turn.

Secure the Scene

Exile target nonland permanent. Its controller creates a 1/1 white Soldier creature token.

Alpine Watchdog

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

Trusty Retriever

When this creature enters, choose one —
• Put a +1/+1 counter on this creature.
• Return target artifact or enchantment card from your graveyard to your hand.

Isamaru, Hound of Konda

Pack Leader

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