Amber Card
The Amber Card (JP: アンバーカード) is an armor bought in the Dark World in various Chapters of Deltarune. It can be purchased for 100 D$ from both Seam's and Rouxls Kaard's shops, respectively in the Field and on Card Castle's Floor 5F. It gives +1 DF and can be equipped to any party member.
Two Amber Cards can be given to Malius in Castle Town to fuse them into a Silver Card, giving +2 DF and 5% more money.
If Chapter 2 is started without a Completion FILE, Kris and Susie's default armor is two Amber Cards, while Ralsei has one Amber Card and a White Ribbon.
If Chapter 3 is started without a Completion FILE, Kris, Susie and Ralsei's default armor is one Amber Card and one GlowWrist equipped to each of them.
- ... better than nothing. [When equipping it to Susie]
- It's sticky, huh, Kris... [When equipping it to Ralsei]
- It's like a name-tag! [When equipping it to Noelle]
Amber Card sold in Rouxls Kaard's shop
- Based on the description of the item along with Ralsei and Noelle's reactions when equipping it to them, it is likely that the Amber Card's Light World equivalent is a sticky note.