Tin-Wing Chimera

Flying
Sacrifice this creature: Put a +2/+2 counter on target Chimera creature. It gains flying. (This effect lasts indefinitely.)

Maskwood Nexus

Creatures you control are every creature type. The same is true for creature spells you control and creature cards you own that aren't on the battlefield.
{3}, {T}: Create a 2/2 blue Shapeshifter creature token with changeling. (It is every creature type.)

Iron-Heart Chimera

Vigilance
Sacrifice this creature: Put a +2/+2 counter on target Chimera creature. It gains vigilance. (This effect lasts indefinitely.)

Embermouth Sentinel

When this creature enters, you may search your library for a basic land card, reveal it, then shuffle and put that card on top. If you control a Dragon, put that card onto the battlefield tapped instead.

Lead-Belly Chimera

Trample
Sacrifice this creature: Put a +2/+2 counter on target Chimera creature. It gains trample. (This effect lasts indefinitely.)

Three Tree Mascot

Changeling (This card is every creature type.)
{1}: Add one mana of any color. Activate only once each turn.

Stalactite Dagger

When this Equipment enters, create a 1/1 colorless Shapeshifter creature token with changeling. (It's every creature type.)
Equipped creature gets +1/+1 and is all creature types.
Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.)

Barkform Harvester

Changeling (This card is every creature type.)
Reach
{2}: Put target card from your graveyard on the bottom of your library.

Runed Stalactite

Equipped creature gets +1/+1 and is every creature type.
Equip {2}

Firdoch Core

Changeling (This card is every creature type.)
{T}: Add one mana of any color.
{4}: This artifact becomes a 4/4 artifact creature until end of turn.

Bloodline Pretender

Changeling (This card is every creature type.)
As this creature enters, choose a creature type.
Whenever another creature you control of the chosen type enters, put a +1/+1 counter on this creature.

Brass-Talon Chimera

First strike
Sacrifice this creature: Put a +2/+2 counter on target Chimera creature. It gains first strike. (This effect lasts indefinitely.)