Eight-and-a-Half-Tails

{1}{W}: Target permanent you control gains protection from white until end of turn.
{1}: Target spell or permanent becomes white until end of turn.

Pious Kitsune

At the beginning of your upkeep, put a devotion counter on Pious Kitsune. Then if a creature named Eight-and-a-Half-Tails is on the battlefield, you gain 1 life for each devotion counter on Pious Kitsune.
{T}, Remove a devotion counter from Pious Kitsune: You gain 1 life.

Sensei Golden-Tail

Bushido 1 (Whenever this creature blocks or becomes blocked, it gets +1/+1 until end of turn.)
{1}{W}, {T}: Put a training counter on target creature. That creature gains bushido 1 and becomes a Samurai in addition to its other creature types. Activate only as a sorcery.

Arcane Signet

{T}: Add one mana of any color in your commander's color identity.

Star Compass

Star Compass enters tapped.
{T}: Add one mana of any color that a basic land you control could produce.

Kitsune Healer

{T}: Prevent the next 1 damage that would be dealt to any target this turn.
{T}: Prevent all damage that would be dealt to target legendary creature this turn.

Settle the Wreckage

Exile all attacking creatures target player controls. That player may search their library for that many basic land cards, put those cards onto the battlefield tapped, then shuffle.

Kitsune Palliator

{T}: Prevent the next 1 damage that would be dealt to each creature and each player this turn.

Path to Exile

Exile target creature. Its controller may search their library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Thought Vessel

You have no maximum hand size.
{T}: Add {C}.

Sol Ring

Split-Tail Miko

{W}, {T}: Prevent the next 2 damage that would be dealt to any target this turn.

Mind Stone

{T}: Add {C}.
{1}, {T}, Sacrifice Mind Stone: Draw a card.

Snow-Covered Plains

Silverchase Fox

{1}{W}, Sacrifice Silverchase Fox: Exile target enchantment.

Rune-Tail's Essence

Prevent all damage that would be dealt to creatures you control.

Rune-Tail, Kitsune Ascendant

When you have 30 or more life, flip Rune-Tail, Kitsune Ascendant.

Rune-Tail, Kitsune Ascendant // Rune-Tail's Essence

Fractured Powerstone

{T}: Add {C}.
{T}: Roll the planar die. Activate only as a sorcery.

Marble Diamond

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

Coldsteel Heart

Coldsteel Heart enters tapped.
As Coldsteel Heart enters, choose a color.
{T}: Add one mana of the chosen color.

Kitsune Blademaster

First strike
Bushido 1 (Whenever this creature blocks or becomes blocked, it gets +1/+1 until end of turn.)

Silverstorm Samurai

Flash
Bushido 1 (Whenever this creature blocks or becomes blocked, it gets +1/+1 until end of turn.)

Patron of the Kitsune

Fox offering (You may cast this spell any time you could cast an instant by sacrificing a Fox and paying the difference in mana costs between this and the sacrificed Fox. Mana cost includes color.)
Whenever a creature attacks, you may gain 1 life.