Character
Colorless
Card details
Fasten
This page tracks the current Colorless power text for Slay the Spire 2, plus the upgraded version, the card's current role in the pool, and a few nearby follow-up reads.
Type
Power
Rarity
Uncommon
Cost
1
Current rule text
Gain an additional 5 Block from Defend cards.
Upgrade comparison
Base and upgraded Fasten at a glance
Base
Gain an additional 5 Block from Defend cards.
Upgraded
Gain an additional 7 Block from Defend cards.
Related cards
More Colorless cards worth checking next
Alchemize
Procure a random potion. Exhaust.
Anointed
Put every Rare card from your Draw Pile into your Hand. Exhaust.
Automation
Every 10 cards you draw, gain Energy .
Beacon of Hope
Whenever you gain Block on your turn, other players gain half that much Block.
Beat Down
Play 3 random Attacks from your Discard Pile.
Believe in You
Another player gains Energy Energy Energy .
Next reads
Put this card back into deckbuilding context
All cards
Go back to the full card wall when you want to compare names, costs, or neighboring picks in the same pool.
Characters
Use the roster hub when you want bigger class context than one card can give you.
Best early card picks
Follow this page when you want the mechanic or guide context that makes this card easier to evaluate mid-run.
When to skip cards
Follow this page when you want the mechanic or guide context that makes this card easier to evaluate mid-run.
Sources
Mega Crit early access launch post
OfficialOfficial launch article for the current early access build.
Neowsletter: Colorless Cards
OfficialOfficial preview of the updated colorless pool.
Untapped Slay the Spire 2 card library
AuthorityUsed as a secondary authority for the currently visible Early Access card pool and card art indexing.