msem-instigator

Flying
Whenever Naiala's Guide deals combat damage to a player, draw a card, then discard a card.

Flying
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
At the beginning of each end step, scry X, you gain X life, and Nakia, Infinity Seer deals X damage to up to one target creature or planeswalker, where X is the number of noncreature spells you've cast this turn.

Flying
Civilized — Whenever Namuzzar's Disciple attacks, if you control an artifact, a creature, and an enchantment, put a +1/+1 counter on Namuzzar's Disciple.

Flying
When Namuzzar's Iterator enters, you may return an artifact or enchantment you control to its owner's hand.

Transcend (Activate as a sorcery to gain the next type and a +1/+1 counter.)
Flying
{1}{U}: Demigod — Whenever a creature you control deals combat damage to a player or planeswalker this turn, draw a card.
{3}{U}{U}: God — Create an X/X blue Spirit creature token, where X is the number of cards in your hand. Put a flying counter on it.

Flying
{2}{U}, {T}: Target creature gets +1/+1 and gains flying until end of turn. Activate only as a sorcery.

Flying
Nectarkin enters with a +1/+1 counter on it.
Whenever Nectarkin deals combat damage to a player, permutate. (You may remove a counter from a creature you control. If you do, put two +1/+1 counters on a different creature you control.)

Flying
{1}{U}, Exile an instant card from your graveyard: Draw a card.
{1}{B}, Exile a creature card from your graveyard: Target creature gets -3/-3 until end of turn.
{1}{R}, Exile a sorcery card from your graveyard: Nefarox, Strifelord deals 3 damage to each opponent.

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

Chronicle (As this enters and after your draw step, add a lore counter. Stop after III.)
[Lore I-II] Each player loses 1 life.
[Lore III] Create a 1/1 black Harpy creature token with flying.

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.

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

Flash
Flying, vigilance
Ward {2} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {2}.)

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

Flying (This creature can't be blocked except by creatures with flying or reach.)
{B}: Night Screecher gains deathtouch until end of turn. (Any amount of damage this deals to a creature is enough to destroy it.)

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.

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.

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

Flash
Flying
Whenever a player discards a card, you draw a card. This ability triggers only once each turn.

Reach, deathtouch
When Nightshade Ambusher enters, you may pay {1}{G}. When you do, destroy target creature with flying.

Flying
At the beginning of your upkeep, mill seven cards, then you may cast an instant or sorcery card from your graveyard. If that spell would be put into your graveyard, exile it instead.
If you would draw a card while your library has no cards in it, you win the game instead.

Flying
{3}{U}, Sacrifice Nimbus Fae: Put target creature on top of its owner's library.

Flying
Sacrifice Nimbus Glider: Creatures you control gain flying until end of turn.

Flying
When Nizev Arbiter enters, judge another target creature you control. (Honor it by putting a +1/+1 counter on it or condemn it by sacrificing it to draw a card.)

Flying
Whenever another creature enters, you gain 1 life.