msem-instigator

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.)

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

Whenever Nightrail Printer attacks, you may tap target creature.

Nimblefoot can't be blocked.

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

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.)

{T}: Add {C}.
Satrapies you control have “{U}, {T}: Each opponent mills a card.

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
At the beginning of your end step, if Nizev Enforcer's power is 4 or greater, create a token that's a copy of it.

Scry X, where X is the number of artifacts you control, then reveal the top card of your library. If it's an artifact card with mana value X or less, put it onto the battlefield. Otherwise, draw a card.

Trample
Golden age (If you cast an instant or sorcery spell, activated a nonmana ability, and attacked this turn, enter a renaissance for this game.)
When Nonpareil of the Abyss enters, create an Idol token.
Nonpareil of the Abyss has ward {8} as long as you're in a renaissance.

You may return a land you control to its owner's hand rather than pay this spell's mana cost.
Northern Express Line enters tapped.
{T}: Add {U}.

Flying
Menagerie — When Northrime Messenger enters, if there are five or more creature types among creatures you control, you may search your library for a Quest card, reveal it, put it into your hand, then shuffle.

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
When Northwind Master enters, you may have another target creature you control gain prowess until end of turn.

Target player mills seven cards. Then exile two cards from that player's graveyard.

Flying
Whenever Notorious Windraider attacks, other attacking Pirates and Rogues you control gain flying until end of turn.

Flash
Whenever Nsimi's Scrambler deals combat damage to a player, look at that player's hand. You may choose a nonland card from it. If you do, that player reveals the chosen card, puts it on the bottom of their library, then draws a card.

Target creature gets -5/-0 until end of turn. You get a glory counter. (You lose glory counters before life. A player with ten or more glory counters wins the game.)

Draw three cards. If you control a Wizard, untap up to three lands.

Chronicle (As this enters and after your draw step, add a lore counter. Stop after III.)
[Lore I-II] Tap target creature you don't control.
[Lore III] Tap target creature you don't control. It doesn't untap during its controller's next untap step.

Defender
As long as your fealty to Islands is six or greater, Oasis Glutton can attack as though it didn't have defender. (Each Island you control counts towards your fealty to Islands.)

When Obscure Apostle enters, create an Idol token. (It's an artifact with “{1}, Sacrifice this artifact: Put a +1/+1 counter on target creature. Activate only as a sorcery.”)
Whenever you sacrifice an Idol, Obscure Apostle can't be blocked this turn.

Return target creature to its owner's hand.
Concord — If there are four or more card types among permanents you control, draw a card.

Flash
Whenever you cast an artifact or enchantment spell, put a +1/+1 counter on Observer of Secret Paths. It can't be blocked this turn.

Put target nonland permanent on top of its owner's library. Create a Treasure token. (It's an artifact with “{T}, Sacrifice this artifact: Add one mana of any color.”)

Attacking creatures get -2/-0 until end of turn.
Metamorph {1}{U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up and cast it at any time for its metamorph cost.)