When Meathook Massacre II enters, each player sacrifices X creatures.

Whenever a creature you control dies, you may pay 3 life. If you do, return that card under your control with a finality counter on it.

Whenever a creature an opponent controls dies, they may pay 3 life. If they don't, return that card under your control with a finality counter on it.

Enchant artifact you control

At the beginning of your upkeep, create a token that's a copy of enchanted artifact. Then if you control eight or more artifacts with the same name as one another, you win the game.

, Exile Mechtitan Core and four other artifact creatures and/or Vehicles you control: Create Mechtitan, a legendary 10/10 Construct artifact creature token with flying, vigilance, trample, lifelink, and haste that's all colors. When that token leaves the battlefield, return all cards exiled with Mechtitan Core except Mechtitan Core to the battlefield tapped under their owners' control.

Crew 2

As Meddling Kids enters, choose a word with four or more letters.

Spells with the chosen word in their text box can't be cast.

Haste

Whenever you attack with three or more creatures, investigate. (Create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.")

When Medicine Runner enters, you may remove a counter from target permanent.

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.)

You gain 8 life.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after IV.)

I — Scry 2.

II — Choose a card name.

III — When you cast a spell with the chosen name for the first time this turn, draw two cards.

IV — Look at the top card of each player's library.

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.)

Draw two cards.

Sliver creatures you control get +3/+3.

Sacrifice an artifact: Megatog gets +3/+3 and gains trample until end of turn.

Living metal (During your turn, this Vehicle is also a creature.)

Whenever Megatron attacks, you may sacrifice another artifact. When you do, Megatron deals damage equal to the sacrificed artifact's mana value to target creature. If excess damage would be dealt to that creature this way, instead that damage is dealt to that creature's controller and you convert Megatron.

Vigilance, trample

Whenever Meglonoth blocks a creature, Meglonoth deals damage to that creature's controller equal to Meglonoth's power.

All creatures get -X/-0, where X is the number of cards in your hand.

When Meldweb Curator enters, put up to one target instant or sorcery card from your graveyard on top of your library.

Cast this spell only during your turn and only during combat before blockers are declared.

You choose which creatures block this combat and how those creatures block.

Whenever a creature attacks and isn't blocked this combat, untap it and remove it from combat.

Melek, Reforged Researcher's power and toughness are each equal to twice the number of instant and sorcery cards in your graveyard.

The first instant or sorcery spell you cast each turn costs less to cast.

Heroic — Whenever you cast a spell that targets Meletis Astronomer, look at the top three cards of your library. You may reveal an enchantment card from among them and put it into your hand. Put the rest on the bottom of your library in any order.

You can't get poison counters.

Creatures you control can't have -1/-1 counters put on them.

Creatures your opponents control lose infect.

Melira's Keepers can't have counters put on it.

Destroy target land. Melt Terrain deals 2 damage to that land's controller.

All lands are no longer snow.

Memorial to Folly enters tapped.

: Add .

, , Sacrifice Memorial to Folly: Return target creature card from your graveyard to your hand.

Memorial to Glory enters tapped.

: Add .

, , Sacrifice Memorial to Glory: Create two 1/1 white Soldier creature tokens.

Memorial to War enters tapped.

: Add .

, , Sacrifice Memorial to War: Destroy target land.

Aftermath (Cast this spell only from your graveyard. Then exile it.)

Each player shuffles their hand and graveyard into their library, then draws seven cards.

Buyback costs cost less.

Counter target spell. Scry 2.

, Sacrifice Memory Jar: Each player exiles all cards from their hand face down and draws seven cards. At the beginning of the next end step, each player discards their hand and returns to their hand each card they exiled this way.

Target opponent reveals their hand. You choose a nonland card from that player's graveyard or hand and exile it.

Cycling (, Discard this card: Draw a card.)

You may cast target instant or sorcery card from an opponent's graveyard without paying its mana cost.

When Memory Test enters, target opponent exiles cards from the bottom of their library until they exile five nonland cards, then turns those nonland cards face down.

Visit — Name the exiled face-down cards, then look at them. If you named them correctly, turn them face up, then claim the prize

Prize — Create three 1/1 red Balloon creature tokens with flying, then sacrifice Memory Test and open an Attraction.

Lights — 4, 6

Target opponent reveals their hand. You choose a nonland card from it. That player discards that card. You may put a card that has an Adventure that player owns from exile into that player's graveyard.

, Exile Memory Vessel: Each player exiles the top seven cards of their library. Until your next turn, players may play cards they exiled this way, and they can't play cards from their hand. Activate only as a sorcery.

Target player shuffles up to three target cards from their graveyard into their library.

Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

: Add one mana of any one color. Spend this mana only to cast a creature spell.

Whenever you cast a creature spell that doesn't share a creature type with a creature card in your library, draw a card.

Put target permanent card from your graveyard on top of your library. (Then exile this card. You may cast the creature later from exile.)

Regenerate target creature.

Other green creatures you control get +1/+1.

, Discard a card: Draw a card.

( can be paid with either or 2 life.)

Counter target spell with mana value 1.

Target player discards a card.

Cipher (Then you may exile this spell card encoded on a creature you control. Whenever that creature deals combat damage to a player, its controller may cast a copy of the encoded card without paying its mana cost.)

Whenever another creature you control with power 2 or less enters, you may pay . If you do, draw a card.

Flying

Each creature you control is a Vampire in addition to its other creature types and has "Whenever this creature deals damage to a creature, put a +1/+1 counter on this creature."

Mephitic Ooze gets +1/+0 for each artifact you control.

Whenever Mephitic Ooze deals combat damage to a creature, destroy that creature. The creature can't be regenerated.

Mephit's Enthusiasm deals 4 damage to target creature or planeswalker. If excess damage was dealt this way, note that excess damage, then you get a boon with "When you cast your next creature spell, it perpetually gets +X/+0, where X is the noted number."

At the beginning of your end step, if you didn't play a land this turn, you may draw a card.

, : Put a winch counter on Mercadian Lift.

, Remove X winch counters from Mercadian Lift: You may put a creature card with mana value X from your hand onto the battlefield.

: The next time Mercenaries would deal damage to you this turn, prevent that damage. Any player may activate this ability.

When Mercenary Knight enters, sacrifice it unless you discard a creature card.