msem-instigator

First mate — Each nonland card in your starting deck has “+1/+1 counter” or “harmonize” in its printed rules text. (If this card outside the game is your chosen first mate, you may swap it with a card in your opening hand.)
Once each turn, if one or more +1/+1 counters would be put on a permanent you control, you may put twice that many of those counters on it instead.
Once each turn, if you would trigger a harmony ability of a permanent you control, you may have that ability trigger twice instead.

When Limbhacker Blade enters, each opponent discards a card.
Equipped creature gets +2/+0.
Equip {2}

Aura and Equipment spells you cast cost {1} less to cast.

Trample, haste
Whenever Lisseria, General of Kanaa attacks, you may exchange its power with the power of target creature defending player controls until end of turn.

Ward—Pay 3 life.
Whenever you cast an instant or sorcery spell, recruit. (Create a 0/0 white Soldier Army creature token, then put a +1/+1 counter on each Army you control.)

Livia's name is Senaturian Legion in addition to its other names as long as it's on the battlefield.
At the beginning of your upkeep, conjure a card named Senaturian Legion into your hand, then discard a card. (It's a 1/1 Human Soldier for {W}{W} that gets +1/+1 for each other creature on the battlefield named Senaturian Legion.)
Other Soldiers you control have haste.

Trample
Whenever Living Archipelago enters or attacks, up to two target lands you control voyage. (If they aren't being targeted by another spell or ability, they phase out.)
Whenever a land you control phases in, you may create a tapped token that's a copy of that land.

Flash
When Lizaveth's Surveyor enters, investigate. (Create a colorless Clue artifact token with “{2}, Sacrifice this artifact: Draw a card.”)
Lizaveth's Surveyor's power is equal to the number of artifacts you control.

Whenever you attack with two or more Knights and/or Soldiers, you may have one of them seek valor. (Give it that Oath Aura. Fulfill it by it dealing combat damage to a player to create a 2/1 white Soldier token.)

Trample
When this creature enters, it seeks secrets or valor. (Give it that Oath Aura. Fulfill secrets by attacking with it and two or more other creatures to draw a card. Fulfill valor by dealing combat damage to a player to create a 2/1 white Soldier token.)

When this creature enters, if you gained or lost life this turn, it seeks valor. (Give it that Oath Aura. Fulfill it by it dealing combat damage to a player to create a 2/1 white Soldier token.)

When this creature enters, create a Treasure token.
This creature gets +1/+1 for each different name among tokens you control.

Reach
When this creature dies, create a 1/1 red Dwarf creature token.

When Lock Away enters, exile target nonland permanent an opponent controls until Lock Away leaves the battlefield.

Whenever another creature you control enters, Loisch deals 1 damage to any target.
{4}{R}{G}: Loisch gets +X/+X and gains trample until end of turn, where X is the number of creatures you control.

{2}{G}: Put a +1/+1 counter on Lonesome Ravager.
Ride {G} ({G}: Transform this and attach it to target creature you control without a Steed. Ride only as a sorcery.)

Menace
Lonesome Trio can't attack or block unless at least three other creatures you control also attack or block.

When Long Journey enters, exile target creature or planeswalker an opponent controls until Long Journey leaves the battlefield.

Take an extra turn after this one. Exile Look to the Future.
Civilized — If you control an artifact, a creature, and an enchantment, until the end of your next turn, you may look at the top card of your library any time and you may play the top card of your library.

Deathtouch
Artifacts and creatures your opponents control have “At the beginning of your upkeep, you lose 1 life unless you tap this permanent and have an opponent gain control of it.”

Exile up to one target creature or planeswalker. Its controller gains life equal to its mana value.
Orchestrate {W} (You may exile this card from your hand any time you could cast a sorcery for its orchestrate cost. When you next resolve a spell, you may cast this from exile without paying its mana cost.)

When Lost Kitten leaves the battlefield, create a 1/1 white Peasant creature token.

Ride {2}{W} ({2}{W}: Transform this and attach it to target creature you control without a Steed. Ride only as a sorcery.)

Whenever Loyalist Escort or another Knight or Soldier you control enters, you may choose one that hasn't been chosen this turn —
• Tap target creature an opponent controls.
• Untap target creature you control.

Changeling (This card is every creature type.)
{1}: Another target creature you control gains the creature type of your choice until end of turn.
{1}: Change the text of another target creature you control by replacing all instances of one creature type with the creature type of your choice until end of turn.