msem-instigator

First strike, haste
Whenever Lothaire attacks, create a 0/0 colorless Reflection creature token that's tapped and attacking. Creatures you control get +1/+1 until end of turn.
{2}{R}{W}: Put a +1/+1 counter on each creature you control.

Deathtouch, lifelink
If a creature would die, exile it instead.
Lotusheart Gorran has all activated and triggered abilities of creature cards exiled with it.

Trample
Lotusleaf Blade gets +1/+1 as long as you control another Warrior.

When Loyal Retriever dies, search your library for an Aura or Equipment card, reveal it, put it into your hand, then shuffle.
Foreshadow {5}{W} (You may cast this spell for its foreshadow cost. If you do, also trigger its “dies” abilities when it enters.)

Defender, trample
Whenever you lose life, Loyal Watchdog may attack as though it didn't have defender until the beginning of your next end step.

Whenever you cast a spell that's white, blue, black, or green, create a 1/1 white Soldier creature token.

If a player would lose life, that player loses 3 life instead.
If a player would gain life, that player gains 3 life instead.

When Lunar Defractor enters, each player discards a card.
Revive {5}{B}{B} ({5}{B}{B}, Exile this card from your graveyard: Create a token that's a copy of it except it has no mana cost. Revive only as a sorcery.)

Flash
Flying
When Lunar Emissary enters, exile another target creature you control until Lunar Emissary leaves the battlefield.

Flying
Golden age (If you cast an instant or sorcery spell, activated a nonmana ability, and attacked this turn, enter a renaissance for this game.)
Lunar Flock has vigilance as long as you're in a renaissance.

Flying
Crew 2
Golden age (If you cast an instant or sorcery spell, activated a nonmana ability, and attacked this turn, enter a renaissance for this game.)
As long as you're in a renaissance, Lunar Shachuan is an artifact creature.

Whenever one or more creatures in Luocha Mentor's pack attack, each creature in its pack gets +1/+0 until end of turn. (Two or more creatures you control with equal power are in a pack.)

Flying
Prismatic — Whenever you cast a multicolored spell, scry 1.

As an additional cost to cast this spell, discard a card or pay {2}.

Menace (This creature can't be blocked except by two or more creatures.)
Whenever Maddened Elk attacks, it gets +1/+1 until end of turn for each other attacking creature you control.

Players can't sacrifice creatures to cast spells or activate abilities unless that player sacrifices an additional creature. The same is true for discarding cards and paying life.

Flying
{1}{W}: Target creature with a +1/+1 counter on it gains flying until end of turn.

At the beginning of each combat, if you control a creature with flying, Magnific Wilderkin gets +1/+1 and gains flying until end of turn. The same is true for first strike, double strike, deathtouch, haste, hexproof, indestructible, lifelink, menace, reach, trample, and vigilance.

Whenever another creature you control dies, each other player sacrifices a creature.

Whenever an opponent discards a card, you may draw a card.

Flying
{1}, Sacrifice a creature: Mahara Angel gets +1/+1 until end of turn.

Whenever you cast a spell with mana value 4 or greater, create a Treasure token. If that spell's mana value is 6 or greater, draw a card. If that spell's mana value is 8 or greater, Main Role Maiden deals 4 damage to each creature and planeswalker you don't control.

This spell costs {X} less to cast, where X is the number of creatures you control.
Vigilance

Haste
Sacrifice a creature or discard a card or reappropriate or pay 2 life: Makias, Marked Marauder gets +1/+0 until end of turn. (To reappropriate, exile exactly two cards from your hand and/or graveyard.)

When Makshi, Patron of Blades enters, search your library for an Equipment card, reveal it, put it into your hand, then shuffle. Add {W}{U}{B}{R}{G}. Spend this mana only to cast Equipment spells and activate abilities of Equipment.