Whenever Magnetic Rhetorician attacks, make a pledge.

Destroy target creature or planeswalker if it has mana value 3 or less or if you control a legendary creature.

Trample
When Main Street Hooligang dies, if it wasn't blocking, exile the top card of your library. You may play it this turn.

Exile the top X cards of target opponent's library. You may play those cards for as long as they remain exiled, and you may pay {VP}{VP}{B} rather than pay the mana costs of those spells.

Each opponent separates the creatures they control into two piles. For each opponent, you choose one of their piles. Each opponent sacrifices the creatures in their chosen pile.

{2}, {T}: Exile target creature you control, then reveal the top card of your library. If the revealed card is a creature card, put it onto the battlefield. Otherwise, return the exiled card to the battlefield under its owner's control.

Deathtouch
Drop — When Malicious Mech enters, each player sacrifices a creature. If you didn't cast any creature spells during your last turn, instead each opponent sacrifices a creature.

Flying
When Malicious Skycleaver enters, pay any amount of life. It deals that much damage to each other creature.
Cybersoul {7}{B}{B}

Until end of turn, target creature gets +2/+2 and gains trample and “Whenever this creature deals combat damage to a player, return target permanent card with mana value less than or equal to the damage dealt from your graveyard to your hand.”

{T}: Add one mana of any color.
Whenever you cast a multicolored spell, untap Mana Harvesters. This ability triggers only once each turn.

Enchant land you control
Enchanted land is a 2/2 Elemental creature with vigilance, haste, ward {1}, and “{T}: Add two mana of different colors.” It's still a land.
If enchanted land would leave the battlefield, instead sacrifice Manifest the Lightveins and that land gains indestructible until end of turn.

{6}: Put two +1/+1 counters on target creature you control. Activate only as a sorcery and only if your devotion to white is three or more.

Flying
When Marbled Messenger enters, draw a card.

When Marie Laurent enters, you may search your library for a card named Hans Nehmann or Diago Maldovo and reveal that card. If you do, shuffle, then put the card on top of it.
Legendary Allies you control have double strike.

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 tapped Treasure token.
[–3]: Gain control of target artifact. It becomes a Treasure artifact, loses all other types, and loses all abilities except for activated mana abilities.
[–8]: Target opponent chooses a nonland permanent they control. You gain control of the rest.

You lose life equal to the number of cards you've drawn this turn, then draw a card. You may repeat this process any number of times.

As an additional cost to cast this spell, sacrifice a creature.
Exile the top X cards of your library, where X is the sacrificed creature's power. Until the end of your next turn, you may play those cards.

When Masked Duo enters, tap up to one target creature. If you control an artifact, that creature doesn't untap during its controller's next untap step.

At the beginning of combat on your turn, you may have target Advisor you control get +2/-1 until end of turn.

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

Target creature you control gets +2/+1 until end of turn. It fights up to one target creature you don't control.

When Master of the Dark Arts enters, you may exile an instant or sorcery card from your graveyard. If you do, each opponent sacrifices a creature.
Pay 2 life: Master of the Dark Arts gains flying and deathtouch until end of turn.

Master of the Ring enters with an opponent's choice of two different counters on it from among menace, first strike, and trample.

Choose a number between 0 and 5. Counter up to one target spell unless its controller pays {X}, where X is the chosen number. Then mill five minus X cards. You may return a card milled this way to your hand.

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.