As this enchantment enters, choose a number and a second number one higher or one lower than the first number.
All instances of the first chosen number in the full text of each permanent, spell, and card in any zone are changed to the second chosen number.

If Cheatyface is in your hand, you may sneak Cheatyface onto the battlefield. If an opponent catches you right away, that player may exile Cheatyface.
Flying

Whenever this creature attacks and isn't blocked, you may exile up to two target creature cards from defending player's graveyard. If you do, you gain 1 life for each card exiled this way and this creature assigns no combat damage this turn.

As an additional cost to cast this spell, sacrifice a land.
Search your library for a basic land card, put that card onto the battlefield, then shuffle.
Draw a card at the beginning of the next turn's upkeep.

Rulebreaker — A deck with this commander can have Aura cards of any color identity and any basic land cards.
+1: Add one mana of any color. When you spend this mana to cast an Aura spell this turn, create a 1/1 red Gremlin creature token.
−3: Discard your hand, then draw cards equal to twice the number of Auras you control. For each Aura attached to you, attach it to an opponent of your choice.
The Unluckiest Planeswalker can be your commander.

Enchant creature
Enchanted creature can't attack.
Prevent all combat damage that would be dealt by enchanted creature.

, : Conjure a random card from Tome of the Infinite's spellbook into your hand. It perpetually gains prismatic.

Wild Shape — Specialize . Activate only if you control six or more lands.
When Lukamina, Moon Druid enters, if you cast it, seek a land card with a basic land type.

Flying, haste
Whenever Mountain Mover enters or attacks, put a Mountain card from outside the game underneath it.
When Mountain Mover leaves the battlefield, put all cards underneath it onto the battlefield.
Crew 3

Defender, flying
, : Put a +1/+1 counter on each creature with a tail target player controls. Stare down up to one target creature until end of turn. (It can't attack or block as long as you're looking directly at it.)

Cumulative upkeep (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)
, Discard a card: Draw a card.

Exile all lands. Give each player a number of those cards chosen at random equal to the number of those cards the player controlled. Each player returns those cards to the battlefield under their control.

Enchant creature
Whenever enchanted creature attacks and isn't blocked, its controller may have it deal damage equal to its power plus 2 to another target creature. If that player does, the attacking creature assigns no combat damage this turn.

, , Sacrifice a creature: This creature deals X damage to target creature, where X is a number in the sacrificed creature's text box.

If your life total is greater than 10, it becomes 10. For the rest of the game, your maximum life total is 10. You get an emblem with "Pay 2 life: Add one mana of any color" and "At the beginning of your upkeep, you draw a card and you lose 1 life."

Flying, haste
When this creature enters, roll a six-sided die. If the result is 3 or less, you lose that much life.

Target player sacrifices a nontoken creature of their choice. When they do, you may discard a card. If you do, conjure a duplicate of the sacrificed creature into your hand. It perpetually gains prismatic.

When you cast this spell, create a 1/1 white Athlete creature token.
Rebound (If you cast this spell from your hand, exile it as it resolves. At the beginning of your next upkeep, you may cast this card from exile without paying its mana cost.)

: Regenerate this creature.
At the beginning of each end step, if this creature regenerated this turn, create a 0/1 blue Starfish creature token for each time it regenerated this turn.

When this creature enters, you may untap target permanent.

Cast this spell only if no permanents named Tidal Influence are on the battlefield.
This enchantment enters with a tide counter on it.
At the beginning of your upkeep, put a tide counter on this enchantment.
As long as there is exactly one tide counter on this enchantment, all blue creatures get -2/-0.
As long as there are exactly three tide counters on this enchantment, all blue creatures get +2/+0.
Whenever there are four or more tide counters on this enchantment, remove all tide counters from it.

Enchant non-Wall creature you control
When this Aura enters, draw a card at the beginning of the next turn's upkeep.
Tap enchanted creature: This Aura deals 1 damage to any target. Put a -0/-1 counter on enchanted creature. Activate only if enchanted creature is untapped.

Shadow (This creature can block or be blocked by only creatures with shadow.)
Whenever a creature you control with shadow deals combat damage to a player, draw a card.
: Put a shadow counter on another target creature. Activate only as a sorcery.

Double strike
Whenever Klement, Tempest Acolyte is dealt damage, it deals that much damage to any target.

When this creature dies, roll a six-sided die. If the result is 4 or less, this creature deals that much damage to you.

Yell "Who wants a souvenir?" and announce the name of a nonland card in your graveyard. Each player in an Un-game who can hear you may bid life. You start the bidding at 0. The high bidder loses life equal to the high bid. They copy the card and may cast the copy without paying its mana cost. If you didn't win the bid, you gain life equal to the high bid and create that many Treasure tokens.

Haste
Robots you control get +1/+1.
, , Tell a joke you haven't told this game to someone outside the game: Create a 1/1 white Clown Robot artifact creature token. If that person laughed, the token gains haste until end of turn.

This creature can't be the target of spells unless it attacked or blocked this turn.

Flying
Whenever Thieving Aven deals combat damage to a player, heist target opponent's library.
Whenever you cast a spell you don't own, put a +1/+1 counter on Thieving Aven.

Nonartifact creatures get -1/-1 until end of turn.

Flying
When this creature enters, choose a creature card in your hand. It perpetually gains flying.

Flying, haste
This creature can't block.
At the beginning of your end step, if an opponent was dealt 3 or more damage this turn, you may pay . If you do, return this card from your graveyard to the battlefield.

Choose one at random —
• You get an emblem with "At the beginning of your upkeep, pay . If you don't, you lose the game."
• Each player discards their hand.
• Planeswalk to Pools of Becoming. (Once there, you can roll the planar die only if you're playing Planechase.)
• For each opponent, exile cards from the top of their library until you exile a nonland card. You may cast those cards without paying their mana costs.
• Destroy all creatures and non-Bolas planeswalkers.
• You get an emblem with "You can cast nonland cards from your sideboard."

If you roll a 3 on a six-sided die, you may reroll that die.

Whenever another creature enters under your control, that creature perpetually gains haste if its power is 4 or greater. If its toughness is 4 or greater, you gain 4 life. If its mana value is 4 or greater, seek a creature card.

As this enchantment enters, choose a color and an opponent.
White creatures get +2/+1 as long as the chosen player controls a nontoken permanent of the chosen color.
When the chosen player controls no nontoken permanents of the chosen color, sacrifice this enchantment.