msem-instigator

Ward—{2} or 2 life. (Whenever this becomes the target of a spell or ability an opponent controls, counter it unless that player pays {2} or 2 life.)
Whenever another permanent becomes the target of a spell you control, create a token that's a copy of it. Sacrifice that token at the beginning of your next turn's end step.

Vigilance
Creatures you control with a +1/+1 counter on them have mentor. (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.)
Creatures you control with no +1/+1 counters on them have training. (Whenever this creature attacks with another creature with greater power, put a +1/+1 counter on this creature.)

When Leija's Greenblade enters, you may pay {G}. If you do, destroy target artifact or enchantment.

Heroic — Whenever you cast a spell that targets Leina Tower Sentry, put a +1/+1 counter on Leina Tower Sentry and you gain 1 life.

You may look at the top card of your library any time.
Once each turn, you may cast a spell from the top of your library.
Whenever you cast a spell from a library, create a 1/1 blue Elemental creature token with vigilance.

Whenever you cast a spell during another player's turn, monstrosity 1. (If this creature isn't monstrous, put a +1/+1 counter on it and it becomes monstrous.)

Experience (Whenever this creature attacks, if it has fewer than three +1/+1 counters on it, put a +1/+1 counter on it.)
Whenever a +1/+1 counter is put onto Lerithan Rebel, it deals 1 damage to any target.

Flying

Reach
{2}{G}, {T}, Sacrifice this creature: It deals 4 damage to target creature with flying.

{X}{W}{W}: Prevent the next X damage that would be dealt to target creature you control this turn. Whenever damage is prevented this way, you gain that much life.

Whenever a +1/+1 counter is put on Lifeblood Leecher, target creature an opponent controls gets -1/-1 until end of turn.

When Lifebreather enters, you gain 4 life.
Revive {4}{W} ({4}{W}, 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.)

{3}{G}: Put a +1/+1 counter on Lifecaller Dryad.

Pay 2 life: Lifecraft Aberration gains indestructible until end of turn.
Pay 3 life: Lifecraft Aberration gets +1/+1 until end of turn.

When Lifegorging Aberration enters, each opponent loses X life, where X is the number of Zombies you control. You gain life equal to the life lost this way.

Kindle 4—{4}{U}{U} ({4}{U}{U}, Exile this card from your graveyard: Create four 1/1 colorless Elemental creature tokens. Kindle only as a sorcery.)

Reach (This creature can block creatures with flying.)
Whenever Lifespinner Spider blocks or becomes blocked by a creature with flying, you gain 1 life.

Reach
Each other creature you control gets +1/+1 for each +1/+1 counter on it.

Distorted (This creature can be blocked by tapped creatures but not untapped creatures.)

Distorted (This creature can be blocked by tapped creatures but not untapped creatures.)
{W}, {T}: Lightbolt Archer deals 1 damage to target unblocked attacking creature.

Whenever Lightseeker Nymph perseveres, search your library for a basic land card, put it onto the battlefield tapped, then shuffle. (A creature perseveres when it survives damage.)

Whenever another artifact you control enters, put a +1/+1 counter on Lightsteel Enforcer.

Lightwalker has flying as long as it has a +1/+1 counter on it.

{B}, Sacrifice a creature: Put a +1/+1 counter on Lightwrencher.

Hexproof from spells cast from a graveyard
If a creature you control would die and that creature was the target of an instant or sorcery spell this turn, you may put it on top of its owner's library instead.