Surly Farrier

{T}: Target creature you control gets +1/+1 and gains vigilance until end of turn. Activate only as a sorcery.

Timid Shieldbearer

{4}{W}: Creatures you control get +1/+1 until end of turn.

Feisty Spikeling

Changeling (This card is every creature type.)
During your turn, this creature has first strike.

Flock Impostor

Changeling (This card is every creature type.)
Flash
Flying
When this creature enters, return up to one other target creature you control to its owner's hand.

Springleaf Drum

{T}, Tap an untapped creature you control: Add one mana of any color.

Evershrike's Gift

Enchant creature
Enchanted creature gets +1/+0 and has flying.
{1}{W}, Blight 2: Return this card from your graveyard to your hand. Activate only as a sorcery. (To blight 2, put two -1/-1 counters on a creature you control.)

Crossroads Watcher

Trample
Whenever another creature you control enters, this creature gets +1/+0 until end of turn.

Winnowing

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.)
For each player, you choose a creature that player controls. Then each player sacrifices all other creatures they control that don't share a creature type with the chosen creature they control.

Spiral into Solitude

Enchant creature
Enchanted creature can't attack or block.
{1}{W}, Blight 1, Sacrifice this Aura: Exile enchanted creature. (To blight 1, put a -1/-1 counter on a creature you control.)

Mistmeadow Council

This spell costs {1} less to cast if you control a Kithkin.
When this creature enters, draw a card.

Plains

Gangly Stompling

Changeling (This card is every creature type.)
Trample

Dundoolin Weaver

When this creature enters, if you control three or more creatures, return target permanent card from your graveyard to your hand.

Riverguard's Reflexes

Target creature gets +2/+2 and gains first strike until end of turn. Untap it.

Thoughtweft Lieutenant

Whenever this creature or another Kithkin you control enters, target creature you control gets +1/+1 and gains trample until end of turn.

Rhys, the Evermore

Flash
When Rhys enters, another target creature you control gains persist until end of turn. (When it dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)
{W}, {T}: Remove any number of counters from target creature you control. Activate only as a sorcery.

Chitinous Graspling

Changeling (This card is every creature type.)
Reach

Brigid, Doun's Mind

{T}: Add X {G} or X {W}, where X is the number of other creatures you control.
At the beginning of your first main phase, you may pay {W}. If you do, transform Brigid.

Brigid, Clachan's Heart

Whenever this creature enters or transforms into Brigid, Clachan's Heart, create a 1/1 green and white Kithkin creature token.
At the beginning of your first main phase, you may pay {G}. If you do, transform Brigid.

Brigid, Clachan's Heart // Brigid, Doun's Mind

Kinsbaile Aspirant

As an additional cost to cast this spell, behold a Kithkin or pay {2}. (To behold a Kithkin, choose a Kithkin you control or reveal a Kithkin card from your hand.)
Whenever another creature you control enters, this creature gets +1/+1 until end of turn.

Thoughtweft Imbuer

Whenever a creature you control attacks alone, it gets +X/+X until end of turn, where X is the number of Kithkin you control.

Forest

Gilt-Leaf's Embrace

Flash
Enchant creature
When this Aura enters, enchanted creature gains trample and indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it. If its toughness is 0 or less, it still dies.)
Enchanted creature gets +2/+0.