msem-instigator

When Fallspeaker Satyr enters or dies, surveil 1. (Look at the top card of your library. You may put that card into your graveyard.)

Whenever a creature you control enters for the second time each turn, it gains haste until end of turn. You may have it get +1/+1 until end of turn.

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.)
Trample

Trample, haste
When Relonche Cavalry enters, other creatures you control get +1/+0 and gain trample and haste until end of turn.

Trample
Chosen one ({W}{U}{B}{R}{G}: Transform this permanent.)

When Shifty Squirrel enters, you gain 3 life.
Sacrifice a creature: Transform Shifty Squirrel.

Whenever Unbudging Badger attacks, if its power is 4 or greater, it gains trample until end of turn.

Remove a +1/+1 counter from a creature you control: Regenerate Verendas Brawler. (The next time this creature would be destroyed this turn, it isn't. Instead tap it, remove all damage from it, and remove it from combat.)

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.)
Vigilance

Ferried Stagecoach can't be blocked as long as another creature is attacking.
Whenever Ferried Stagecoach deals combat damage to a player, each player flips a coin. Each opponent that loses the flip discards a card, and each player on your team that wins the flip draws a card.

Flash
Flying
Whenever a player discards a card, you draw a card. This ability triggers only once each turn.

Haste
When Bloodfury Warlord enters or dies, it deals 2 damage to each player.

Menace, haste
Whenever another creature dies, you get a blood counter.
{B}{R}, Pay two blood counters: Return Dthan, Who Bloodies the Sands from your graveyard to the battlefield.

When Ill-Fated Seer enters, each player sacrifices a creature. If they can't, Ill-Fated Seer deals 3 damage to them.
Revive {2}{B}{R} ({2}{B}{R}, Exile this card from your graveyard: Create a token that's a copy of this card, except it has no mana cost. Activate only as a sorcery.)

First strike (This creature deals combat damage before creatures without first strike.)
Whenever a creature you control becomes blocked by a creature, Itava Scourge deals 1 damage to that creature's controller.

Menace
Discard a card: Target artifact creature you control salvages Rappel Liner. Activate only if Rappel Liner is in your graveyard and only as a sorcery. (Exile this card until that creature leaves the battlefield. When that creature deals combat damage to a player, return a card it salvaged to your hand.)

Whenever you cast a spell from your graveyard, you may sacrifice a creature. If you do, copy that spell. You may choose new targets for the copy.

Whenever Crescent Crasher attacks, put a +1/+1 counter on target attacking creature with lesser power.

Whenever you create one or more tokens, put a +1/+1 counter on target creature you control.
{2}{G}{W}: Create a 0/1 green Plant creature token.

If an enchanted permanent you control would leave the battlefield, instead destroy one of the Auras attached to it, then that permanent phases out. (Treat it and anything attached to it as though they don't exist until its controller's next turn.)

At the beginning of your upkeep, invigorate 1. (Choose a creature with the least power among creatures you control and put a +1/+1 counter on it.)

When Overconfident Batter dies, if it's enchanted or you cast a spell that targeted it this turn, you gain 3 life.

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.

Haste
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
When Favoured Firebrand dies, you may pay {U}{R} any number of times. Whenever you do, Favoured Firebrand deals 2 damage to any target and you draw a card.

Whenever an Aura you control enters, untap Fuming Lawmaker.
{1}, {T}: For each opponent, Fuming Lawmaker deals 1 damage to that player or a planeswalker they control. Scry 1.