Keeper's Sack

Effects

• Gives Isaac stat upgrades when he buys items/pickups from shops.
  • The three possible stat upgrades Keeper's Sack can give are +0.5 damage, +0.03 speed, and +0.25 range.
  • Keeper's Sack will always give one stat upgrade when Isaac makes a purchase, plus one for every 5 cents Isaac spent on the pickup/item.
• Spawns three coins and a key on pickup.

Notes

• Keeper's Sack works with anything that costs coins, including Devil deals/Black Markets as (Keeper) Keeper / affected by (Keeper's Bargain) Keeper's Bargain or A Pound of Flesh, items or pickups created by Keeper's Box, the Angel shop created by The Stairway, and the second shop created by Member Card.
• All stat upgrades are tied to the item itself; losing Keeper's Sack somehow will result in the loss of all obtained stat upgrades.

Interactions

• (Store Credit) Store Credit: Anything bought will not give stats.
• Steam Sale: Stat boosts for every 5 coins spent will only apply to the modified cost after picking up Steam Sale rather than the original cost.