When Leyrune Collector enters the battlefield, look at the top four cards of your library. You may reveal an artifact or land card from among them and put it into your hand. Put the rest on the bottom of your library in a random order. If you revealed a land this way, you may put a land card from your hand onto the battlefield tapped.
Wander {3}{G}{U}

Menace
Revolt — When Lichbane Battlecaster enters the battlefield, if a permanent you controlled left the battlefield this turn, Lichbane Battlecaster deals 2 damage to any target.

Revolt — When Lichbane Veteran enters the battlefield, tap target creature you don't control. If a permanent you controlled left the battlefield this turn and that creature has power 3 or greater, exile it instead.

Flash
When Lichbane Wardwielder enters the battlefield, choose one —
• Copy target activated or triggered ability from a nonland source. You may choose new targets for the copy.
• You may choose new targets for target spell or ability.

Enchant land
When Lightvein Discovery enters the battlefield, put a +1/+1 counter on target creature you control.
Enchanted land has “{T}: Add two mana of different colors.”

Indulgence
When Lost in the Moment enters the battlefield, draw a card then discard a card.
Whenever you indulge, each opponent mills four cards.

Flash
When Louna, the Ever-Learning enters the battlefield, for each kind of counter among permanents you control, you may put a counter of that kind on Louna, the Ever-Learning.

Trample
When Lumbering Foeslayer enters the battlefield, it deals damage equal to its power to each opponent, each planeswalker, and each other creature.

Deathtouch
Drop — When Malicious Mech enters the battlefield, each player sacrifices a creature. If you didn't cast any creature spells during your last turn, instead each opponent sacrifices a creature.

Flying
When Marbled Messenger enters the battlefield, draw a card.

When Marie Laurent enters the battlefield, you may search your library for a card named Hans Nehmann or Diago Maldovo and reveal that card. If you do, shuffle, then put the card on top of it.
Legendary Allies you control have double strike.

When Masked Duo enters the battlefield, tap up to one target creature. If you control an artifact, that creature doesn't untap during its controller's next untap step.

When Master of the Dark Arts enters the battlefield, you may exile an instant or sorcery card from your graveyard. If you do, each opponent sacrifices a creature.
Pay 2 life: Master of the Dark Arts gains flying and deathtouch until end of turn.

When Mindblight Connoisseur enters the battlefield, each opponent discards a card. Each opponent who didn't discard a card with mana value 3 or greater this way loses 2 life.

Mogis's Raider has first strike as long as it is attacking.
When Mogis's Raider enters the battlefield, bless target creature.

When Mokar Cliffbreaker enters the battlefield, you may exile a land card from your graveyard. If you do, you gain 4 life.
Wander {5}{G}{G}

When Moonlit Meditation enters the battlefield, draw three cards, then put two cards from your hand on top of your library.
{1}{U}, Sacrifice Moonlit Meditation: Shuffle up to three target cards from your graveyard into your library.

Drop — When Morasha Moshlord enters the battlefield, if you didn't cast any creature spells during your last turn, all creatures get +2/-2 and gain menace until end of turn.

When Moving Mountains enters the battlefield, search your library for a land card, put it onto the battlefield tapped, then shuffle.
If a Ruin you control would stop being a creature, it becomes a creature in addition to its other types for as long as you control Moving Mountains.

Flash
When Narzi, Hero of the Mokar enters the battlefield, up to one other target creature gets +1/+1 and gains indestructible until end of turn. If she wandered, other creatures you control get +1/+1 and gain indestructible until end of turn instead.
Wander {4}{W}{W}

When Nascent Reaper enters the battlefield, you may discard a card. If you do, draw a card.

When Necrotic Savant enters the battlefield, return target creature card from your graveyard to the battlefield if it has mana value 3 or less or if Necrotic Savant escaped.
Escape—{5}{B}{B}, Sacrifice two permanents, Exile five other cards from your graveyard.

Flash
Lifelink
When Nikon, Skophos Protector enters the battlefield, the next time a source of your choice would deal damage to you or a permanent you control this turn, prevent that damage. If damage is prevented this way, Nikon deals that much damage to that source's controller.

Flying
Odunos Smuggler can't block.
When Odunos Smuggler enters the battlefield, target player mills two cards. Scry 2.

Menace
When Ogre Gourmand enters the battlefield, create a Food token.