Flying
: Target permanent becomes white until end of turn.

Flying, deathtouch
Whenever this creature attacks, each opponent loses 3 life.

Flying
Cascade
Whenever you cast a spell with cascade, return this card from your graveyard to your hand.

Whenever this creature deals combat damage to a player, you get that many .
At the beginning of combat on your turn, you may pay . When you do, this creature becomes a copy of another target creature you control, except it has this ability and "Whenever this creature deals combat damage to a player, you get that many ."

Return target card from your graveyard to your hand.

, : Draw a card, then discard a card.
Whenever you discard one or more artifact cards, create a tapped Powerstone token. This ability triggers only once each turn.

Choose two —
• Creatures you don't control get -3/-0 until end of turn.
• Create two tapped Powerstone tokens.
• Create a tapped 0/0 colorless Construct artifact creature token with "This creature gets +1/+1 for each artifact you control."
• Scry 2, then draw a card.

When this creature dies, you gain 3 life.
Whenever a player casts a white spell, you may pay . If you do, you gain 1 life.

Artifact Each creature you control that's a Clamfolk, Crab, Crocodile, Fish, Homarid, Jellyfish, Kraken, Leviathan, Lobster, Merfolk, Nautilus, Octopus, Otter, Oyster, Seal, Serpent, Shark, Shrimp, Sponge, Squid, Starfish, Trilobite, Turtle, Walrus, or Whale gets +2/+2.
At the beginning of your upkeep, if you control twelve different creatures from the above list and don't control a Brushwagg, you win the game.

Target creature gets +2/+2 until end of turn. Investigate.

Mutate
Whenever this creature mutates, exile cards from the top of your library until you exile X permanent cards, where X is the number of times this creature has mutated. Put those permanent cards onto the battlefield.

Choose two —
• Destroy all artifacts.
• Destroy all enchantments.
• Destroy all creatures with mana value 3 or less.
• Destroy all creatures with mana value 4 or greater.

When this creature enters and whenever it attacks while saddled, create a 3/3 green Elephant creature token.
Saddle 5

When this creature enters, exile all opponents' graveyards. Choose a nonland card exiled this way. You may cast that card for as long as it remains exiled, and you may spend mana as though it were mana of any color to cast that spell.

Creatures your opponents control enter tapped.
Whenever a creature an opponent controls enters, you gain 1 life.

Convoke
Trample

Autograph Book enters with a page counter on it for each person who has signed it.
, , Remove a page counter from Autograph Book: Draw a card.

Whenever you crank Auto-Key, until end of turn, target creature becomes an artifact in addition to its other types and gains ": You gain 3 life."

: Add . Spend this mana only to activate an ability or cast an artifact spell.

Whenever one or more artifact creatures you control deal combat damage to a player, you get (an energy counter).
Pay : Create a tapped 3/3 colorless Robot artifact creature token.

Flying
Whenever this creature attacks, you may sacrifice another creature or artifact. If you do, draw a card.

When this creature enters, scry 2.

You may have this creature enter as a copy of any creature on the battlefield, except it isn't legendary, is an artifact in addition to its other types, and has myriad.

Prototype — 2/2
Vigilance
, : Put a +1/+1 counter on target Assembly-Worker you control.

Shroud
: Until end of turn, Autumn Willow can be the target of spells and abilities controlled by target player as though it didn't have shroud.

Hexproof
When Autumn Willow enters, create a 1/1 green Forest Dryad land creature token. (It's affected by summoning sickness.)
Whenever you tap a land creature for mana, add an additional .