Sacrifice a Treasure: Put a loyalty counter on Marilye, Dreaming Big.
[+1]: Draw a card, then discard a card. If you discarded a nonland card this way, create a Treasure token.
[–3]: Gain control of target artifact. It becomes a Treasure and gains “{T}: Add {U}.”
[–8]: Target opponent chooses a nonland permanent they control. You gain control of the rest.

Mass of Remains's power is equal to the total number of permanent cards you own in your graveyard and in exile.
Spellcharge 3

Matter Harvester has protection from mana values less than the number of artifacts you control.
Whenever a nonland permanent you don't control leaves the battlefield, create a 1/1 colorless Cyborg artifact creature token.

Equipped creature gets +0/+1 and has vigilance.
Equipped creature assigns combat damage equal to its toughness rather than its power, and can attack as though it didn't have defender.
Equip {2}

When Menelaia enters the battlefield, put a +1/+1 counter on up to three target creatures.
Whenever a creature you control with a counter on it becomes the target of a spell or ability you control, that creature gains hexproof and trample until end of turn.

Trample
Mercurial Wright gets +1/+0 for each other artifact you control.
{2}: Target permanent becomes an artifact in addition to its other types until end of turn.

Whenever Minou, the Russet Whisker attacks, you may tap up to one target creature an opponent controls and untap up to one target creature you control. If the creature you control had vigilance, put a +1/+1 counter on it.

Indestructible
As long as your devotion to black and red is less than seven, Mogis isn't a creature.
Whenever you attack, each opponent loses 1 life for each creature attacking them. If a player lost 5 or more life this way, that player discards a card.

Ward—Sacrifice a permanent.
Whenever you cast a spell that targets Molpadia, the Last Acephali, exile the top card of your library. You may play it this turn.

Monument to Might's power and toughness are each equal to the number of lands you control.
You may look at the top card of your library any time, and you may play lands from the top of your library.
Spellcharge 5

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 your life total is 7 or higher than your starting life total, you may return Mortea from your graveyard to the battlefield tapped.

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.

Mykian, Pop Paragon enters the battlefield 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 the battlefield, 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}

[+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.”

When Neon Colossus dies, draw a card.

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.

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

Flash
Lifelink
When Nikon, Skophos Protector enters the battlefield, the next time a source of your choice would deal damage to you or a permanent you control this turn, prevent that damage. If damage is prevented this way, Nikon deals that much damage to that source's controller.

Indulgence
Whenever you indulge, you may put a toxin counter on target creature an opponent controls. Surveil 1.
Creatures your opponents control get -1/-1 for each toxin counter on them.

Nykthos, Architect of Gods has indestructible as long as you control at least three Shrines.
Whenever Nykthos attacks, you may pay {W}{U}{B}{R}{G}. If you do, search your library for a Shrine or legendary land card, put it onto the battlefield, then shuffle.

Reach, deathtouch
Once each turn, when a counter is put on a creature you control, you may put a counter of that kind on another creature you control.

Whenever Omnoid Destroyer or another artifact enters under your control, artifact creatures you control gain deathtouch until end of turn.

Whenever you cast an instant or sorcery spell, untap Orbinoid.
{T}: Add one mana of any type.