Evolving Door (SNC)

Evolving Door
Casting Cost: {2}{G}
Card Type: Artifact
Card Text:

• 1, T, Sacrifice a creature: Count the colors of the sacrificed creature, then search your library for a creature card that's exactly that many colors plus one. Exile that card, then shuffle. You may cast the exiled card. Activate only as a sorcery.
  Flavour Text:
  In with the old, out with the new.
  Artist: Drew Baker

Analysis:

Strengths:

1. Evolutionary Concept: The card provides a way to "evolve" your creatures into potentially more powerful, multicolored variants.
2. Flexibility: You can tailor the creatures in your deck to have a variety of color identities to maximize the card's potential.
3. Non-mana Cost: It uses life as a resource instead of mana, which could be advantageous in decks with heavy mana commitments.

Weaknesses:

1. Sorcery Speed: The ability can only be activated at sorcery speed, meaning it lacks the surprise factor.
2. Exile: The card to be cast is exiled, so if you can't cast it immediately or soon after, it's lost.
3. Cost: You must pay 1 mana and sacrifice a creature, which can be a high cost depending on the creature sacrificed.

Potential Deck Placement:

• Could be a good fit for decks focused on multicolored creatures or "toolbox" decks that have a variety of creatures for different situations.
• Would synergize well with sacrifice themes, where you're already inclined to send your creatures to the graveyard.

Flavour and Art:
The flavor text "In with the old, out with the new" is a clever twist on the usual saying, fitting the card's mechanic of replacing one creature with another. The art would likely depict some form of mystical gateway, enhancing the card's theme.

Overall Impression:
Evolving Door is an intriguing build-around-me card that requires careful deck construction. The risk of sacrificing a creature and the cost involved can potentially be offset by a more powerful, multicolored creature. This card offers a unique and flavorful way to upgrade your board state.