msem-instigator

Players can't untap more than three permanents during their untap steps.

Draw X cards, then abound. (To abound, you may cast a spell that costs less than this from your hand without paying its mana cost.)

Pressure {B} (You may cast this spell for its pressure cost if seven or more cards are in your graveyard.)
Search your library for a card, put it into your graveyard, then shuffle. You gain 2 life.

Burning Hatred deals 2 damage to any target.
Agonize (You may cast this card from your graveyard by putting a -1/-1 counter on a creature you control in addition to paying its other costs. Then exile this card.)

Siphon (Each -1/-1 counter you put on your creatures up to their remaining toughness while casting this pays for {1}.)
Discard up to two cards, then draw that many cards plus one.

Whenever a player activates an ability that isn't a mana ability, Burning-Tree Shaman deals 1 damage to that player.

Search your library for a card, put it into your graveyard, then shuffle. (Then exile this card. You may cast the creature later from exile.)

Target creature gets +4/+2 and gains trample until end of turn.

Butcher deals 3 damage to target player. (Cast a copy of this spell once while this creature is on the battlefield.)

Whenever Bygone Wreck deals combat damage to a player, you may sacrifice it. If you do, create five Treasure tokens.
Crew 1 (Tap any number of creatures you control with total power 1 or greater: This Vehicle becomes an artifact creature until end of turn.)

When Byron, Unlikely Hero enters, put a +1/+1 counter on each other Citizen or Peasant you control.
Whenever a nontoken creature you control with a +1/+1 counter on it dies, create a 1/1 white Peasant creature token.

Flying
Whenever you gain life, each opponent loses 1 life.

Invocation — Whenever you spend four or more mana to cast a spell or activate an ability during your turn, reveal the top four cards of your library. You may put a creature or land card from among them into your hand. Put the rest on the bottom of your library in a random order.

Haste
Revive {3}{R} ({3}{R}, Exile this card from your graveyard: Create a token that's a copy of this card, except it has no mana cost. Activate this ability only any time you could cast a sorcery.)

Trample
Whenever Cacophonous Demon deals combat damage to a player or planeswalker, you may exile target artifact or enchantment.
Whenever a creature deals damage to you, tap that creature. It becomes an enchantment in addition to its other types.

When Cadalon Experimenter enters, if you control an artifact, investigate. (Create a colorless Clue artifact token with “{2}, Sacrifice this artifact: Draw a card.”)

Whenever you investigate for the first time each turn, investigate an additional time.
{T}, Sacrifice an artifact: Cadalon Inspector deals 2 damage to any target.

When Caer Crann Borderscout enters, you may search your library for a basic land card, reveal it, and put it into your hand. If you do, shuffle.

Menace
Caer Crann Insurgent gets +2/+0 as long as you've foretold a card or cast a foretold spell this turn.

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

As Calamity Apparition enters, 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.

{W}{B}, Exile a creature card from your graveyard: Search your library for a creature card and put that card into your graveyard, then shuffle.
{3}{B}{R}, Discard a card: Return target creature card from your graveyard onto the battlefield. It gains haste. Exile it at the beginning of the next end step. If that creature would leave the battlefield, exile it instead of putting it anywhere else.

Call of the Abyss deals 3 damage to any target and you gain 3 life.

Each player sacrifices a creature. Then return a creature card with mana value 3 or less from your graveyard to the battlefield.

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.”)