msem-instigator

Flying
When Nest Matriarch enters, put a +1/+1 counter on another target creature you control. That creature gains lifelink until end of turn.

Reach
Whenever you cast a spell with mana value 5 or greater, put two +1/+1 counters on Netcrawler.

Flying, trample
Nether Fiend enters with a lifelink counter on it.
{B}{B}, Pay 6 life, Remove a lifelink counter from Nether Fiend: Draw six cards.

Return target permanent card from your graveyard to the battlefield. If that permanent is storied, Netherform becomes an Aura enchantment with enchant permanent. Attach it to that permanent. (Enchantments and legendary permanents are storied.)
Enchanted permanent has indestructible.

Enchant opponent
Enchanted player plays with the top card of their library revealed.
You may cast the top card of enchanted player's library, and you may spend mana as though it were mana of any type to cast it.

Enchant opponent
You control enchanted player except during their extra turns.
At the beginning of enchanted player's end step, if it isn't an extra turn, they take an extra turn after this one.

Flying (This creature can't be blocked except by creatures with flying or reach.)
{R}: Newborn Dragon gets +1/+0 until end of turn.

Whenever you cast your second spell each turn, audition for blue. (Create a 1/1 Construct Actor creature token, a Wizard Role giving 2/2 and prowess, or a Warlock Role giving 2/1 and flying. Roles replace older ones.)

Create a tapped colorless enchantment land token named Paradise with hexproof and “{T}: Add one mana of any color.”
Flashback—{1}{G}, Sacrifice a creature or land. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

{R}{W}{B}, Discard a card named Ni'Ama, God of Adversity: Ni'Ama gains indestructible and becomes a God creature in addition to its other types.
Whenever Ni'Ama enters or attacks, it deals 2 damage to each opponent unless they discard a card. You gain that much life. Repeat this process once.

This spell costs {X} less to cast, where X is the greatest power among creatures you controlled that died this turn.
Flash
Flying, trample

This spell costs {2} less to cast if an opponent lost life this turn.
Destroy target creature.

Enchant player
At the beginning of enchanted player's end step, they lose 2 life unless they discard a card.

Discard two cards, then draw a card for each card discarded this way. Night of Falling Stars deals damage equal to the total mana value of the discarded cards to each creature.

At the beginning of your upkeep, if there are no noncreature cards in your graveyard, you may return target creature card from your graveyard to the battlefield.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I, II — Each player discards a card or sacrifices a creature.
III — Each opponent loses life equal to the number of creature cards in their graveyard. You gain life equal to the number of creature cards in your graveyard.

{1}{G}: Night's Guard gets +2/+2 until end of turn. Activate only once each turn.

Flying
Whenever an opponent discards a card, put a +1/+1 counter on Nightbane Specter.
Whenever Nightbane Specter deals combat damage to a player, that player discards a card.

Put target nonland permanent on top of its owner's library.
Draw a card.

Flying (This creature can't be blocked except by creatures with flying or reach.)
As long as Nightclad Stalker is enchanted, it gets +1/+0 and has deathtouch and lifelink.

Deception {1}{B} ({1}{B}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)
Whenever Nightfall Infiltrator deals combat damage to a player, that player discards a card.

Flying, lifelink
Whenever Nightfall Sphinx or another creature you control enters, each opponent loses 1 life and you gain 1 life.

Destroy target creature. Recruit. (Create a 0/0 white Soldier Army creature token, then put a +1/+1 counter on each Army you control.)

Whenever a storied permanent you control enters, each opponent discards a card. (Enchantments and legendary permanents are storied.)