msem-instigator

As Living Sandstorm enters, choose predator or prey.
Whenever Living Sandstorm attacks,
• Predator — It gets +1/+1 until end of turn.
• Prey — Scry 2.

Trample
Whenever a land you control becomes tapped, Loamwrecker gets +1/+1 until end of turn.

Nonartifact spells cost {1} more to cast.

Flash (You may cast this spell any time you could cast an instant.)
You may cast Wizard spells as though they had flash.
{U}{U}, Tap two untapped Wizards you control: Copy target instant or sorcery spell. You may choose new targets for the copies.

As long as you control no other Humans, Lone Survivor gets +2/+2 and has “Noncreature spells cost {1} more to cast.”

Flying, deathtouch

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

Flying
Long-Finned Skywhale can block only creatures with flying.

Long-Lived Prowler gets +3/+0 as long as there are four or more card types among cards in your graveyard.

Flying (This creature can't be blocked except by creatures with flying or reach.)

Rapport — Whenever Lord's Handmaiden and at least one other creature you control become tapped, tap up to one target creature and remove it from combat.

Instant, sorcery, and legendary spells you cast cost {1} less to cast.

Heretic (Whenever you cast a spell that doesn't share a color with this creature, it gets +1/+1 until end of turn.)
{1}{B}: Lost Dancer becomes black and gains lifelink until end of turn.

Lifelink
{B}, Sacrifice Lostrite Evoker: Add {B}{B}{B}.

Whenever Lotus Acolyte attacks, it gets +1/+0 and gains lifelink until end of turn.

When Lotus Debutante enters, create a colorless artifact token named Lotus Petal with “{T}, Sacrifice this artifact: Add one mana of any color.”
{3}{U}: Draw a card.

When Lotus Feaster enters, create a colorless artifact token named Lotus Petal with “{T}, Sacrifice this artifact: Add one mana of any color.”

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

Whenever an Equipment you control enters, attach it to target creature you control.

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.

Your opponents can't cast more than one spell each turn.
Identity — Lumi Orthodox gets +1/+2 as long as you control at least two other creatures that share a creature type with it.

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

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

Reach
Lupine Skygrazer enters with a +1/+1 counter on it if three or more colors of mana were spent to cast it.

When Lurking Angler enters, if seven or more cards are in your graveyard, draw a card. Otherwise, mill two cards.