msem-instigator

Sacrifice a permanent, then draw cards equal to its mana value.
You may put a permanent card from your hand onto the battlefield if its mana value is less than or equal to the number of cards in your hand.

Destroy up to one target creature with flying or enchantment. Create an Idol token. (It's an artifact with “{1}, Sacrifice this artifact: Put a +1/+1 counter on target creature. Activate only as a sorcery.”)

{1}{G}{G}, Sacrifice a creature: Search your library for a creature card with mana value X or less, where X is 1 plus the sacrificed creature's mana value. Put that card onto the battlefield, then shuffle. Activate only as a sorcery.

First strike
Whenever you make first contact, Callous Conduit deals 1 damage to target player or planeswalker. (You make first contact the first time each turn you cast a spell with a name not in your graveyard or control already.)

When Callous Renegade enters, you may return target Rebel creature card with mana value 4 or less from your graveyard to the battlefield. It gains haste until end of turn.

Battalion — Whenever Callous Trainer and at least two other creatures attack, create a 1/1 white Warrior creature token that's tapped and attacking.

When Callow Survivors enters, you may return target artifact or enchantment card with mana value 3 or less from your graveyard to the battlefield.

Calmed Battleground enters tapped unless you control a Plains.
{T}: Add {B} or {R}.

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

Archive 3 (As this enters, shuffle the top three cards of your main library into a new face up library. Sacrifice this after the archived library is empty.)
Whenever you draw a card from the archived library, put the top card of your main library on the bottom of the archived library.
{G}: Exchange a card from the archived library with a card from your hand.

{T}, Sacrifice Camahueto Calf: Return target land card from your graveyard to the battlefield.

Reach (This creature can block creatures with flying.)

This spell costs {1} less to cast for each creature you control.
Trample
While you're searching your library, you may cast Camouflaged Sprareos from your library.

When Campaign Recruiter enters, 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.

Target creature gets +3/+2 and gains menace until end of turn.
Quickdraw {1}{R} (When a creature you control blocks or becomes blocked, you may cast this spell for {1}{R}.)

Hexproof
Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)

Trample
{2}{G}{G}: Put Canal Lurker from its owner's graveyard on top of its owner's library.

Counter target spell.

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.

Flash
When Cane Dancer enters, you may cast target blue instant or sorcery card with mana value 2 from your graveyard without paying its mana cost. If that spell would be put into your graveyard, exile it instead.

Canid Simulacrum enters with each counter on it from among +1/+1, flying, first strike, deathtouch, lifelink, menace, reach, shield, trample, and vigilance. (If it would be dealt damage or destroyed, remove a shield counter from it instead.)
Whenever a creature you control enters, move two random counters from Canid Simulacrum onto that creature.

You may cast this spell with no targets for {2}{R}. If you do, as it resolves, create a 1/1 red Hound creature token, then attach Canine Acumen to that token.
Enchant creature
Enchanted creature gets +2/+0 and has first strike.

{2}{R}, Sacrifice an artifact or creature: It deals 2 damage to any target.

Cannonblast deals 5 damage to target creature. If you control a Pirate, Cannonblast deals 3 damage to that creature's controller.

Cannoncoil Hermit enters with X +1/+1 counters on it.
{1}, {T}: Put a +1/+1 counter on Cannoncoil Hermit.
{1}, {T}, Remove a +1/+1 counter from Cannoncoil Hermit: It deals damage equal to its power to any target.
{3}: Untap Cannoncoil Hermit.