Until end of turn, target nonland permanent loses all abilities and becomes your choice of a blue Frog creature with base power and toughness 1/1 or a blue Octopus creature with base power and toughness 4/4.

: Target creature gains flying until end of turn.

Whenever you cast a blue spell, you may untap Merrow Levitator.

Enchant creature

As Metamorphic Alteration enters the battlefield, choose a creature.

Enchanted creature is a copy of the chosen creature.

Metathran Elite can't be blocked as long as it's enchanted.

Flying

Metathran Transport can't be blocked by blue creatures.

: Target creature becomes blue until end of turn.

: Choose a color of a permanent you control. Add one mana of that color.

Creatures you control can't be blocked except by legendary creatures.

Whenever one or more creatures you control deal combat damage to a player, venture into the dungeon. (Enter the first room or advance to the next room.)

Search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle.

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

Create four 1/1 white Bird creature tokens with flying.

Basic landcycling (, Discard this card: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.)

: Add .

, : Untap target legendary permanent.

Target player discards X cards at random.

Whenever an opponent casts their first spell each turn, that player exiles the top card of their library. If it's a nonland card, you may cast it without paying its mana cost.

Counter target spell unless its controller pays .

At the beginning of your upkeep, Minion of Tevesh Szat deals 2 damage to you unless you pay .

: Target creature gets +3/-2 until end of turn.

First strike, forestwalk, vigilance (This creature deals combat damage before creatures without first strike, it can't be blocked as long as defending player controls a Forest, and attacking doesn't cause this creature to tap.)

Cast this spell only during the declare blockers step.

For each creature attacking you or a planeswalker you control, create a token that's a copy of that creature and that's blocking that creature. Exile those tokens at end of combat.

Counter target spell unless its controller pays .

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

Haste

, , Discard a card: Draw a card.

Whenever you discard one or more artifact cards, add . This ability triggers only once each turn.

Whenever you cast a historic spell, you may pay . If you do, create a token that's a copy of Mishra's Self-Replicator. (Artifacts, legendaries, and Sagas are historic.)

Permanents don't untap during their controllers' untap steps.

At the beginning of each player's upkeep, that player chooses a permanent for each card in their graveyard, then untaps those permanents.

Ninjutsu (, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)

Whenever Mist-Syndicate Naga deals combat damage to a player, create a token that's a copy of Mist-Syndicate Naga.

Look at the top seven cards of your library. You may put one of those cards onto the battlefield if it has the same name as a permanent. Put the rest on the bottom of your library in any order.

Creatures without flying can't attack.

Soldier creatures have vigilance.

: Create a 1/1 white Soldier creature token.

You can't cast more than one spell each turn.

Whenever you cast a spell, draw a card.

Destroy all creatures target player controls. For each creature that died this way, that player creates two 1/1 red Goblin creature tokens.

Whenever a creature you control dies, you gain 1 life and draw a card.

As long as you control a Yanling planeswalker, Moon-Eating Dog has flying. (It can't be blocked except by creatures with flying or reach.)

At the beginning of your upkeep, if twenty or more creature cards are in your graveyard, you win the game.

Flying

, : Tap target creature.

Mountainwalk (This creature can't be blocked as long as defending player controls a Mountain.)

Enchant creature you control

When enchanted creature dies, create X 1/1 white Soldier creature tokens, where X is its power.

When Museum Nightwatch dies, create a 2/2 white and blue Detective creature token.

Disguise (You may cast this card face down for as a 2/2 creature with ward . Turn it face up any time for its disguise cost.)

Permanents you control with counters on them gain hexproof and indestructible until end of turn. Prevent all damage that would be dealt to those permanents this turn. Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

All permanents are artifacts in addition to their other types.

All cards that aren't on the battlefield, spells, and permanents are colorless.

Players may spend mana as though it were mana of any color.

, , Sacrifice Myr Incubator: Search your library for any number of artifact cards, exile them, then create that many 1/1 colorless Myr artifact creature tokens. Then shuffle.

, : Create a token that's a copy of Myr Propagator.

: Add .

, : Add , , or .

Buyback (You may pay an additional as you cast this spell. If you do, put this card into your hand as it resolves.)

Scry 3. (Look at the top three cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)

Vigilance

, : Target creature can't block this turn.

, : Target creature blocks this turn if able.

Protection from artifacts

At the beginning of combat on your turn, target creature you control gains indestructible until end of turn.

: Nahiri's Machinations deals 1 damage to target blocking creature.

Flying; banding (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding you control are blocking or being blocked by a creature, you divide that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)

: Nalathni Dragon gets +1/+0 until end of turn. If this ability has been activated four or more times this turn, sacrifice Nalathni Dragon at the beginning of the next end step.

At the beginning of your upkeep, you may have target opponent discard a card at random.

Whenever an opponent discards a card, you may create a 1/1 green Elf Warrior creature token.

All creatures able to block Nath's Elite do so.

When Nath's Elite enters the battlefield, clash with an opponent. If you win, put a +1/+1 counter on Nath's Elite. (Each clashing player reveals the top card of their library, then puts that card on the top or bottom. A player wins if their card had a higher mana value.)

Each player who controls six or more lands chooses five lands they control and sacrifices the rest. Each player who controls four or fewer lands may search their library for up to X basic land cards and put them onto the battlefield, where X is five minus the number of lands they control. Then each player who searched their library this way shuffles.

When Natural Emergence enters the battlefield, return a red or green enchantment you control to its owner's hand.

Lands you control are 2/2 creatures with first strike. They're still lands.

Put target artifact on the bottom of its owner's library.