msem-instigator

Forebode three times, then untap each Omen you control. Until end of turn, if you would draw a card while your library has no cards in it, you win the game instead. (Create three tapped colorless Omen artifact tokens with “{T}, Discard a card, Sacrifice this artifact: Draw a card.”)

Whenever Last Priest of Hadak attacks, you may discard a card. If you do, draw a card.
Whenever you discard a card, you may exile that card from your graveyard. During any turn you dealt damage to a player with a Dragon or Shaman, you may play that card.

Up to two target creatures can't block this turn.
Agonize (You may cast this card from your graveyard by putting a -1/-1 counter on a creature you control in addition to paying its other costs. Then exile this card.)

Lava Spill deals 2 damage to any target.
Look at the top three cards of your library. Put one on top and the rest on the bottom in any order.

{1}{R}: Lavatongue Lizard gets +1/+0 until end of turn.
Ferocious — Whenever Lavatongue Lizard attacks, if you control a creature with power 4 or greater, Lavatongue Lizard gains first strike until end of turn.

When Lay Bare Ambitions enters, if it was cast, target opponent reveals their hand. Choose a nonland card from it. That player discards that card.
If a spell or ability an opponent controls would cause them to draw one or more cards, instead sacrifice Lay Bare Ambitions and they skip those draws.

At the beginning of your upkeep, target player draws a card and loses 1 life. Each other player creates a colorless artifact token named Lotus Petal with “{T}, Sacrifice this artifact: Add one mana of any color.”

Repeat the following process X times. Exile a creature you control, then return it to the battlefield under your control.
Exile Lazaire's Conjuring.

{T}: Add {G}.

Whenever equipped creature attacks, put a +1/+1 counter on it.
Equip {2}

Lifelink
Menagerie — When Leafdown Glimmerfox enters, if there are five or more creature types among creatures you control, exile another target nonland permanent until its controller's next end step.

Trample
Leafdown Hunk enters with two +1/+1 counters on it if you control another creature with power 4 or greater.

Whenever you cast an instant, sorcery, or Wizard spell, Leafdown Sizzlemage gets +1/+0 until end of turn.

{1}, Tap an untapped creature you control: Leaping Dancer gets +0/+1 and gains flying until end of turn. Then if you've activated this ability three or more times this turn, transform Leaping Dancer.

Whenever target creature deals combat damage to a player this turn, draw two cards.
Fuse (You may cast one or both halves of this card from your hand.)

Once each turn, when a player loses life, you may harmonize. (Trigger up to one harmony of a permanent you control.)
Harmony — Each opponent loses 1 life and you gain that much life.

Counter target instant or sorcery spell you don't control unless its controller copies it twice. You gain control of those copies and may choose new targets for them.

As an additional cost to cast this spell, exile a card from your graveyard.
Counter target spell with mana value less than or equal to the exiled card's mana value.

As an additional cost to cast this spell, sacrifice a creature.
Target creature gains +4/+4 until end of turn.

When Leech-Ridden Corpse dies, each opponent loses 1 life and you gain 1 life.

Breach (Whenever this deals combat damage to a player, you may have it become an Aura Curse until your next turn. Attach it to that player.)
Once during each of your turns, you may cast a spell with mana value 3 or less that targets a cursed opponent or a permanent a cursed opponent controls by paying life equal to its mana value rather than its mana cost.

When Leery Sortie enters, create two 1/1 green Scout creature tokens.
{R}, Sacrifice Leery Sortie: Target creature can't block this turn.

Choose one —
• Destroy target artifact.
• Add {R}{R}{R}.

When Legacy Warmask enters, return target creature card with mana value 2 or less from your graveyard to the battlefield, then attach Legacy Warmask to that creature.
Equipped creature gets +1/+1.
Equip {1}

Enchant creature
As Legacy of Dawn Hill enters, choose a creature type.
Enchanted creature gets +2/+0, has first strike, and is the chosen type in addition to its other types.