msem-instigator

Creatures you control get +0/+1 and can attack as though they didn't have defender.
Whenever three or more creatures you control attack or block, each creature you control assigns combat damage equal to its toughness rather than its power this turn.

({T}: Add {W}.)
Bygone Guardian enters the battlefield tapped.
Vigilance
{2}{W}{W}: Bygone Guardian becomes a creature in addition to its other types until end of turn.

Flying
When Byte Bug enters the battlefield, conjure a card named Data-Point into your hand. (It's a sorcery that costs {2} with “Draw a card.”)

Flying
When Cadre Hawk enters the battlefield, you may search your library and/or graveyard for a card named Cadre Hawk, reveal it, and put it into your hand. If you searched a library this way, shuffle.

Vigilance
Whenever Cai Lan, the Chained perseveres, exile target creature an opponent controls until Cai Lan leaves the battlefield. (A creature perseveres when it survives damage.)

Vigilance
When Cai Lan enters the battlefield, exile target nonland permanent an opponent controls with mana value 2 or less. Its controller creates an Idol token.

As Calamity Apparition enters the battlefield, choose fade or linger.
When Calamity Apparition dies,
• Fade — You gain 2 life and scry 2.
• Linger — Put a +1/+1 counter on target creature you control.

When Calamity Rose enters the battlefield, each player chooses a number of artifacts they control equal to the number of artifacts controlled by the player who controls the fewest, then sacrifices the rest. Players sacrifice creatures, enchantments, lands and planeswalkers the same way.

({T}: Add {W}.)
As Calcified Dunes enters the battlefield, you may pay 1 life. If you don't, Calcified Dunes enters the battlefield tapped.

Calciform Wastes enters the battlefield tapped. When it does, it explores. (Reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on this, then you may may put that card into your graveyard.)
{T}: Add {W}.
{2}{W}{W}: Calciform Wastes becomes a Turtle creature. (This effect lasts indefinitely.)

Search your library, graveyard, and/or the command zone for a legendary creature card, reveal it, and put it into your hand. If you search your library this way, shuffle.

Exile target nontoken creature. That creature's controller creates X 1/1 red and white Warrior creature tokens, where X is that creature's mana value.

Permanents entering the battlefield don't cause abilities of permanents to trigger.

Reach (This creature can block creatures with flying.)

When Campaign Recruiter enters the battlefield, you may search your library for a creature card with first strike, double strike, flying, improve, lifelink, melee, or vigilance, reveal it, put it into your hand, then shuffle.

Enchant creature you control
Enchanted creature gets +1/+1 and has ward {1}.
Whenever enchanted creature deals combat damage to a player, choose target creature you control without a permanent named Candlegift attached to it. Create a token that's a copy of Candlegift attached to that creature.
{W}, Sacrifice five enchantments: Create a 5/5 white Angel creature token with flying.

When Capac's Envoy enters the battlefield, draw a card.
If one or more players would draw a card except the first one they draw in each of their draw steps, instead each player may draw a card.

Flying
Whenever Capricious Wind's Disciple attacks, another target creature in its pack gains double strike until end of turn. (Two or more creatures you control with equal power are in a pack.)

Captain of the Militia's power and toughness are each equal to the number of creatures you control.
Adorned — Creatures you control have vigilance as long as Captain of the Militia is equipped and/or enchanted.

Create three 1/1 white Soldier creature tokens.

Primal {W} (During your turn, you may cast this spell for {W} instead of playing a land.)
When Captured Paletusk enters the battlefield, you may search your library for a basic Plains card, put it onto the battlefield tapped, then shuffle. You gain 2 life. Then sacrifice Captured Paletusk if it was cast for its primal cost.

{1}{W}, {T}: Put a +1/+1 counter on target creature without a +1/+1 counter. Activate only as a sorcery.

Survivors you control have lifelink.

Wander {2}{W}{W} (You may cast this from the battlefield for its wander cost.)
[–1]: Create a 1/1 white Bird creature token with flying or a 2/2 black Cat creature token.
[–2]: If a permanent entering the battlefield under your control this turn causes an ability of a permanent you control to trigger, that ability triggers an additional time.
[–3]: Put a +1/+1 counter on each creature you control.

Enchant creature
Enchanted creature has defender.
Whenever enchanted creature blocks, you gain 1 life.