Cenn's Tactician

{W}, {T}: Put a +1/+1 counter on target Soldier creature.
Each creature you control with a +1/+1 counter on it can block an additional creature each combat.

Burrenton Shield-Bearers

Whenever Burrenton Shield-Bearers attacks, target creature gets +0/+3 until end of turn.

Goldmeadow Stalwart

As an additional cost to cast this spell, reveal a Kithkin card from your hand or pay {3}.

Ballyrush Banneret

Kithkin spells and Soldier spells you cast cost {1} less to cast.

Burrenton Bombardier

Flying
Reinforce 2—{2}{W} ({2}{W}, Discard this card: Put two +1/+1 counters on target creature.)

Forfend

Prevent all damage that would be dealt to creatures this turn.

Cenn's Heir

Whenever Cenn's Heir attacks, it gets +1/+1 until end of turn for each other attacking Kithkin.

Coordinated Barrage

Choose a creature type. Coordinated Barrage deals damage to target attacking or blocking creature equal to the number of permanents you control of the chosen type.

Goldmeadow Harrier

Kinsbaile Borderguard

Kinsbaile Borderguard enters with a +1/+1 counter on it for each other Kithkin you control.
When Kinsbaile Borderguard dies, create a 1/1 white Kithkin Soldier creature token for each counter on it.

Kithkin Harbinger

When Kithkin Harbinger enters, you may search your library for a Kithkin card, reveal it, then shuffle and put that card on top.

Knight of Meadowgrain

First strike
Lifelink (Damage dealt by this creature also causes you to gain that much life.)

Militia's Pride

Whenever a nontoken creature you control attacks, you may pay {W}. If you do, create a 1/1 white Kithkin Soldier creature token that's tapped and attacking.

Moonglove Extract

Sacrifice Moonglove Extract: It deals 2 damage to any target.

Kinsbaile Balloonist

Flying
Whenever Kinsbaile Balloonist attacks, you may have target creature gain flying until end of turn.

Redeem the Lost

Target creature you control gains protection from the color of your choice until end of turn. Clash with an opponent. If you win, return Redeem the Lost to its owner's hand. (Each clashing player reveals the top card of their library, then puts that card on the top or bottom. A player wins if their card had a higher mana value.)

Goldmeadow Dodger

Goldmeadow Dodger can't be blocked by creatures with power 4 or greater.

Plains

Crib Swap

Changeling (This card is every creature type.)
Exile target creature. Its controller creates a 1/1 colorless Shapeshifter creature token with changeling.

Wizened Cenn

Other Kithkin creatures you control get +1/+1.

Kithkin Zephyrnaut

Kinship — At the beginning of your upkeep, you may look at the top card of your library. If it shares a creature type with Kithkin Zephyrnaut, you may reveal it. If you do, Kithkin Zephyrnaut gets +2/+2 and gains flying and vigilance until end of turn.

Pollen Lullaby

Prevent all combat damage that would be dealt this turn. Clash with an opponent. If you win, creatures that player controls don't untap during the player's next untap step. (Each clashing player reveals the top card of their library, then puts that card on the top or bottom. A player wins if their card had a higher mana value.)

Kithkin Healer

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

Neck Snap

Destroy target attacking or blocking creature.

Surge of Thoughtweft

Creatures you control get +1/+1 until end of turn. If you control a Kithkin, draw a card.