Usturlap

Item	Details
English Name	Astrolabe
Rarity	Ancient
Character	Shared
How to Obtain	Ancient relic (boss drop)
Overall Tier	A

Astrolabe is an Ancient relic that lets you choose 3 cards from your deck and transform each into a random upgraded card. Unlike Pandora's Box's full randomness, you pick which cards transform, so risk is more controllable.

Comparison with Pandora's Box

• Pandora's: Transforms all Strikes/Defends. No selection — total gamble
• Astrolabe: You choose 3 cards. Controllable but fewer transformations
• The transformed cards are pre-upgraded — a major Astrolabe advantage
• Astrolabe for stability; Pandora's for high-risk high-reward

Optimal Transformation Targets

1. Strike — weakest attack. Almost certain to upgrade to a better card
2. Defend — candidate when Block cards are abundant
3. Misfit cards — transform cards that don't match your build direction
4. Starter unique cards — character-specific starters if they don't fit the build

Expected Results

• Transformed cards come randomly from the character pool but are pre-upgraded, making them immediately viable
• Upgraded Common cards are often far better than Strike
• Upgraded Rare cards are jackpots
• Getting even 1 fitting card out of 3 is a solid return

Character Evaluations

Character	Rating	Comment
Ironclad	A	Strong card pool with few duds. An upgraded high-cost card becomes an instant ace
Silent	A	Upgraded Poison cards accelerate the Poison build from early on
Defect	A	Upgraded orb cards greatly increase effect magnitudes
Necrobinder	B+	Summon cards are RNG-dependent. Great on hit but risks scattering the build
Regent	B+	Upgraded Star cards are strong, but direction may scatter

Card / Relic	Reason
Early game with many basic cards	Plenty of targets, 3-card transformation greatly improves the deck
Thinned decks	Smaller decks see more impact from 3 cards becoming strong cards
Egg-type relics	The transformed cards are already upgraded so eggs don't apply, but newly added cards still benefit

• Prioritize Strikes, then Defends, then build-misfit cards
• Even if the transformed card doesn't fit your direction, upgraded card power often makes it playable
• 3-card transformation is most effective after Act 1 — smaller decks amplify its impact
• After seeing the transformed cards, flexibly adjust your build direction