msem-instigator

Disgraced 2 (This enters with two -1/-1 counters. Whenever it deals combat damage to a player, remove all -1/-1 counters from it.)
When Branded Contractor dies, you may put its counters on target creature.

Haste
You may exert Brash Charger as it attacks. When you do, creatures with power 1 or less can't block this turn. (An exerted creature won't untap during your next untap step.)

Sacrifice another creature: Brash Hunter deals 1 damage to any target.
At the beginning of your end step, if three or more creatures died this turn, transform Brash Hunter.

Alpha (You may have this creature enter with a +1/+1 counter on it. If you do, it becomes alpha and can only attack alone.)
Brazen Chimera can't be blocked except by three or more creatures as long as it has a +1/+1 counter on it.

Trample
Whenever Breaker of Cities deals combat damage to a player, create a 1/1 white Soldier creature token with vigilance.
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.)

{T}: Add one mana of any color. Spend this mana only to cast an instant or sorcery spell.

If you would draw a card, you may instead choose creature or land and exile cards from the top of your library until you exile a card of the chosen kind. Put that card into your hand and put all other cards exiled this way on the bottom of your library in a random order.

Flying
Whenever you cast a spell from anywhere other than your hand, Brightwing Sphinx gains vigilance until end of turn.

Flying
When Brilliant Griffin enters, target creature gets +2/+2 until end of turn.

{T}: Brimstone Grenadiers deals 1 damage to target player.
Whenever you cast an instant or sorcery spell, untap Brimstone Grenadiers.

At the beginning of your upkeep, you may discard a land card. When you do, create a 2/2 green Wolf creature token.

Double strike
Whenever you cast a noncreature spell, you may choose one that hasn't been chosen —
• Tap or untap target permanent.
• Draw two cards, then discard a card.
• Creatures you control get +1/+1 until end of turn.

Flash
Flying
When Bruna, Shepherd of Souls enters, exile target noncreature spell. Then exile its controller's graveyard.

Whenever another creature enters, Brutish Champion fights that creature.

Whenever you cast an enchantment, instant, or sorcery spell, create a 1/1 blue Jellyfish enchantment creature token with slipstream. (It can't be blocked as long as only creatures with slipstream are attacking.)

When Bubblespout Sentry enters, look at the top card of your library. You may put it into your graveyard.

Double strike, vigilance
At the beginning of combat on your turn, create X 1/1 red Dwarf creature tokens with haste, where X is the number of embattled nontoken creatures you control. (A creature is embattled if it has a counter on it or a permanent you control attached to it.)

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.

Defender, reach
Sacrifice Cackling Jack: It deals 3 damage to any target.

Whenever one or more cards are put into an opponent's graveyard from their hand or library, Cackling Tormentor deals 2 damage to any target.

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.”)

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.