Kinscaer Harpoonist

Flying
Whenever Kinscaer Harpoonist attacks, you may have target creature lose flying until end of turn.

Mistmeadow Vanisher

Whenever Mistmeadow Vanisher becomes tapped, exile up to one target nonland, nontoken permanent. Return that card to the battlefield under its owner's control at the beginning of the next end step.

Zealous Guardian

Surge of Thoughtweft

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

Kithkin Billyrider

Glorious Anthem

Goldmeadow Stalwart

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

Wizened Cenn

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

Thoughtweft Trio

First strike, vigilance
Champion a Kithkin (When this enters, sacrifice it unless you exile another Kithkin you control. When this leaves the battlefield, that card returns to the battlefield.)
Thoughtweft Trio can block any number of creatures.

Thistledown Liege

Flash
Other white creatures you control get +1/+1.
Other blue creatures you control get +1/+1.

Blinding Light

Ballyrush Banneret

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

Bond of Discipline

Tap all creatures your opponents control. Creatures you control gain lifelink until end of turn.

Kinsbaile Balloonist

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

Thistledown Duo

Whenever you cast a white spell, Thistledown Duo gets +1/+1 until end of turn.
Whenever you cast a blue spell, Thistledown Duo gains flying until end of turn.

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.

Thoughtweft Gambit

Tap all creatures your opponents control and untap all creatures you control.

Mistmeadow Witch

{2}{W}{U}: Exile target creature. Return that card to the battlefield under its owner's control at the beginning of the next end step.