msem-instigator

Laiyru Shrine enters tapped.
{T}: Add {G} or {U}.
{G/U}, {T}, Sacrifice Laiyru Shrine: Put a +1/+1 counter on target creature you control. Activate only as a sorcery.

Whenever one or more creatures you control deal damage to a player, put a charge counter on Lake of Rage.
{T}: Add {C}.
{T}, Remove a charge counter from Lake of Rage: Add one mana of any color.

({T}: Add {W} or {U}.)
As Lakeside Park enters, you may pay {1}. If you don't, Lakeside Park enters tapped.

{T}: Add {R}.
Whenever you cast a spell from anywhere other than your hand, copy that spell. You may choose new targets for the copy.

{T}, Pay 1 life: Add {U} or {R}.
{2}, {T}, Sacrifice Lamplit Thoroughfare and another permanent: Draw a card. Activate only during your turn.

({T}: Add {B} or {R}.)
Lavatorn Fields enters tapped unless you control a basic Swamp or a basic Mountain.

As Legacy Foundations enters, you may reveal a Plains or Swamp card from your hand. If you don't, Legacy Foundations enters tapped.
{T}: Add {W} or {B}.

Enchant creature
Enchanted creature has “Whenever this creature attacks, attacking creatures you control get +1/+1 until end of turn.”

{T}, Pay 1 life: Add {W} or {B}.
{1}, {T}, Sacrifice Legitimate Establishment: Investigate. (Create a colorless Clue artifact token with “{2}, Sacrifice this artifact: Draw a card.”)

{T}: Add {C}.
{2}, {T}: For each color among cards in your graveyard, add one mana of that color.

Vigilance
Whenever Liege of Asham attacks or blocks, other attacking or blocking creatures you control get +1/+1 until end of turn.

Creatures you don't control get -1/-1.

Flying
Whenever Liege of Iekin attacks, tap target permanent an opponent controls. It doesn't untap during its controller's next untap step.

At the beginning of combat on your turn, target creature gets +1/+1 and gains haste until end of turn.

Trample

Lieshi Shrine enters tapped.
{T}: Add {W} or {B}.
{W/B}, {T}, Sacrifice Lieshi Shrine: Put a +1/+1 counter on target creature you control. Activate only as a sorcery.

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

{T}, Pay 1 life: Add {B}.
{7}{B}{B}, Exile Ligos, Shadow's Source from your hand: Destroy all creatures you don't control. They can't be regenerated.

Flying
Whenever Literary Lioness deals combat damage to player, draw three cards, then discard two cards.
If you would draw a card while your library has no cards in it, you win the game instead.

{T}: Add {C}.
{3}: Living Planet becomes a 2/2 Elemental creature until end of turn. This ability costs {1} less to activate for each creature you control.

Living Vista enters tapped.
{T}: Add {G} or {W}.
{1}, {T}: Add one mana of any color.

{T}: Add {C}.
At the beginning of your end step, if you control three or more enchantments, you may pay {W}. If you do, create a 0/1 white Llama creature token.

{T}: Add {C}.
{3}{W}: Until end of turn, Llereaux's Lair becomes a 1/2 creature. It's still a land. It can't be blocked this turn if {U} was spent to activate this ability, has indestructible if {B} was spent, and gets +2/+1 if {R} was spent.

Lonely Aerie enters tapped.
{T}: Add {W} or {U}.
{W}{U}: Until end of turn, Lonely Aerie becomes a Bird creature with flying in addition to its other types.
Scavenge {W}{U}

Lonely Trail enters tapped.
{T}: Add {G} or {W}.
When Lonely Trail enters, you may put a loyalty counter on a planeswalker you control.