msem-instigator

Destroy target planeswalker. Mummy's Grin deals 2 damage to that planeswalker's controller.

Create two 1/1 white Soldier creature tokens. Prevent all damage that would be dealt to them this turn.

When Mystic Seer enters, each player may scry 1.
{2}{U}: Draw a card, then discard a card.

Each player mills three cards. For each instant and/or sorcery card milled this way, draw a card.

[+1]: Reveal the top card of your library and put that card into your hand. You lose life equal to its mana value.
[0]: You gain 1 life for each card in your hand.
[–7]: Search your library for up to X cards, where X is the number of cards in your hand, and put them into your hand. Then shuffle.

You draw X cards and you lose X life, where X is the number of cards in your graveyard.

When Naiad of the Glen 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.”)
Naiad of the Glen has trample as long as it has a +1/+1 counter on it.

Trial 2 (As you cast this spell, an opponent of your choice may pay 2 life. If they don't, they fail the trial.)
When Nascent Adversary enters, if the trial was failed, it gains haste and first strike until end of turn.

Defender (This creature can't attack.)
When Naturebound Druid enters, you may search your library for a basic land card, reveal it, then shuffle and put that card on top.

Target creature gains deathtouch until end of turn. Regenerate it.

Enchant creature
Enchanted creature gets +1/+1.
When enchanted creature dies, you may exile it. If you do, return target creature card from your graveyard to the battlefield.

Equipped creature has all activated abilities of all creature cards in your graveyard.
Equip {3}

As an additional cost to cast this spell, tap an untapped artifact you control.
Target player discards two 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.

Menace
Ni'Ama's Emissary gets +1/+1 as long as you control a red or white permanent.

{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.

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.

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.

Sacrifice a creature: Look at the top card of target player's library. You may have that player put that card into their graveyard.

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
Whenever Nimble Elemental deals combat damage to a player, you may draw a card. If you do, discard a card.

When Njel Crocodile enters, you may have it fight target creature. (Each deals damage equal to its power to the other.)

{T}: Add {C}.
{3}, {T}, Sacrifice No-Man's Land: Draw a card.