msem-instigator

Enchant creature
When Child of the Pack enters, create a 2/2 green Wolf creature token.
Enchanted creature gets +1/+1 for each Wolf you control.

As an additional cost to cast this spell, sacrifice a creature.
Target creature gets -X/-X until end of turn, where X is the sacrificed creature's power.

Reach
Spirited (When this creature enters, you may activate one of its activated abilities without paying its costs.)
{3}{G}: Exile up to one target card from a graveyard. Scry 1.

{1}{G}, Discard a card: Target land you control becomes a 3/3 Elemental creature. It's still a land. Exile the top card of your library face down.
Whenever a land creature you control deals combat damage to a player, put a card exiled with Children of Gos into your hand.

Cast this spell only if an opponent controls two or more nonwhite creatures or you control six or more lands.
Create X 1/1 white Bird creature tokens with flying. You gain X life.

Children of the Void has hexproof as long as it's your turn.
Children of the Void can't attack or block unless you reappropriate (exile exactly two cards from your hand and/or graveyard).

Harmony — Tap target creature. That creature doesn't untap during its controller's next untap step.
When Chilling Musician enters, harmonize. (Trigger up to one harmony of one permanent you control.)

Engorge (As this enters, mill three cards, then exile a card from among the milled cards.)
Spells you cast that share a type with the card Chillwhisper Witch engorged cost {1} less to cast.

Whenever another creature you control dies, target player loses 1 life and you gain 1 life.

When Chimera Graft dies, manifest the bottom card of your library. (To manifest a card, put it onto the battlefield face down as a 2/2 creature. Turn it face up any time for its mana cost if it's a creature card.)

Equipped creature gets +4/+3.
Equip—{2}, Put a -1/-1 counter on a creature you control.

Trample
Whenever a lore counter is put on a Saga you control, Chimperial Guard gets +2/+2 until end of turn.

When Chiseled Familiar enters, draw a card.
Sacrifice Chiseled Familiar: You gain 2 life.

Concord — Whenever Chitinborn Sentry attacks, if there are four or more card types among permanents you control, prevent all damage that would be dealt to target attacking creature this turn.

Flying

{1}, Sacrifice a creature: Put a +1/+1 counter on Chitterrax, then each opponent loses 1 life and you gain 1 life.

{G}{G}: Create a 2/2 green Wolf creature token.
{1}{G}{G}: Create Shimaru, the White Wolf, a legendary 3/3 green Wolf creature token with hexproof.
{2}{G}{G}: Creatures you control get +2/+2 and gain trample until end of turn.

Wolves you control have hexproof and “Whenever this creature deals combat damage to a player, draw a card.”
At the beginning of your end step, if you don't control a creature named Shimaru, the Unfading, create Shimaru, the Unfading, a legendary 4/4 green Wolf Spirit creature token with trample.

{T}: Target creature loses all abilities until end of turn. Exile Chochin the Silent Moth and that creature.

As an additional cost to cast this spell, discard a card.
Create three 1/1 black Spirit creature tokens with flying.

Enchant creature
Enchanted creature gets -2/-2.
Mirage—{B}, Discard a card. (You may cast this spell as though it had flash for its mirage cost. If you do, sacrifice it at the beginning of the next cleanup step.)

At the beginning of your upkeep, you may discard a card. If you do, draw a card.
At the beginning of your end step, Choking Dunes deals X damage to any target, where X is the number of land cards in your graveyard.

Target creature gets +3/+3 until end of turn and must be blocked this turn if able.
Showcase {3}{G}{G} (Then if you cast this for its showcase cost, create a 1/1 red Bard creature token that can't block and exile this. Whenever it attacks, you may cast a free copy of this.)

Enchant creature
When Chords of Order enters, put a +1/+1 counter on enchanted creature.
Whenever enchanted creature attacks, tap up to one target creature without a +1/+1 counter on it, then untap up to one target creature with a +1/+1 counter on it.

Flash
Flying, lifelink, deathtouch
When Chosen of Aminatou enters, scry 2, then draw a card.