Drop — When Morasha Moshlord enters, if you didn't cast any creature spells during your last turn, all creatures get +2/-2 and gain menace until end of turn.

Ward {1}
Whenever Morbid Bloomer deals combat damage, you may pay {1}. When you do, return up to one other target permanent card from your graveyard to your hand.

Moresso, Infuser of Light is all colors.
Hexproof from monocolored
Whenever you cast a spell with four or more mana symbols in its mana cost, add four mana of different colors. This ability triggers only once each turn.

Lifelink
{B}, Pay 2 life: Mortea, Bloodline Keeper gets +1/+1 until end of turn.
At the beginning of your end step, if you have at least 7 life more than your starting life total, you may return Mortea from your graveyard to the battlefield tapped.

When Moving Mountains enters, search your library for a land card, put it onto the battlefield tapped, then shuffle.
If a Ruin you control would stop being a creature, it becomes a creature in addition to its other types for as long as you control Moving Mountains.

Mundaq, Unlikely Savior can't be blocked by creatures whose power and toughness are equal.
{1}{W}, Return another creature you control to its owner's hand: Put a +1/+1 counter on Mundaq.

Whenever Music Master attacks, you may pay {U}. If you do, put a curio counter on another target creature you control.
{1}{U}: Target creature gains flying until end of turn.

Trample
Whenever you attack, up to one target attacking creature gets +2/+0 and gains trample until end of turn.

Whenever one or more cards leave your graveyard, you gain 2 life. This ability triggers only once each turn.

Mykian, Pop Paragon enters with a +1/+1 counter on it for each color of mana spent to cast it.
Remove two counters from Mykian: Draw two cards.

Flash
When Narzi, Hero of the Mokar enters, up to one other target creature gets +1/+1 and gains indestructible until end of turn. If she wandered, other creatures you control get +1/+1 and gain indestructible until end of turn instead.
Wander {4}{W}{W}

Nascent Lightvein enters tapped.
As Nascent Lightvein enters, choose a color. Then if you control three permanents that could each produce a different color of mana, untap it.
{T}: Add one mana of the chosen color.

Nebulous Ring enters tapped.
{T}: Add {C} or {W}.
{1}, Discard Nebulous Ring: Scry 2.

Neglected Slums enters tapped.
{T}: Add {R} or {G}.
{4}: Make a pledge. Activate only as a sorcery.

[+1]: Exile the top card of your library. You may play it this turn. If that card doesn't share a name with a permanent you control or a card in your graveyard, add {R}{R}.
[–2]: Gain control of target creature until end of turn. Untap that creature. It gains haste and menace until end of turn.
[–6]: You get an emblem with “Whenever you amp it up, this emblem deals 2 damage to any target.”

Neo Stehlia enters tapped unless you control a basic non-Plains land.
{T}: Add {W}.
{2}{W}, {T}: Choose a creature type. Creatures you control of the chosen type get +1/+0 until end of turn.

When Neon Colossus dies, draw a card.

Flying
Neotech Exploiter gets +2/+0 for each permanent you control but don't own.

Flying
Whenever you gain control of a permanent you don't own or a permanent you don't own enters under your control, create a token that's a copy of it. Sacrifice the token at beginning of your next turn's end step.

Flying
Creatures you control but don't own get +1/+1 and have flying.
Whenever a creature you control deals combat damage to a player, you may return it to its owner's hand.

Whenever Neotech Skyguard attacks, it gains flying until end of turn. If you control a permanent you don't own, it also gets +1/+1 until end of turn.

Trample, ward {4}
Equipped creature gets +4/+4 and has trample and ward {4}.
Equip {4}
Spellcharge 8

Favored
Whenever your Champion attacks, creatures you control with power 4 or greater get +1/+1 and gain trample until end of turn.

Nessian Woods enters tapped.
{T}: Add {R} or {G}.
{6}{R/G}: Nessian Woods becomes a 5/4 red and green Dryad creature with trample until end of turn. It's still a land. This ability costs {X} less to activate, where X is your devotion to red and green. Activate only once each turn.