A few months back, Duel Links released Chronicle Cards into the game. Events and promotions (somehow, not the shop) will drop occasional items that can be applied to cards. These will modify the surface (often with animation to mimic some foiling processes), border color, name color, or add a stamp.
This copy of Mithrilium has all of the first three. The copy of True King's Return has an example of a stamp.
As you use the cards in PVP, there's a chance you get access to some exclusive surface modifications. These (Noise, Sepia, and Damaged) each have three stages.
Comments
As you use the cards in PVP, there's a chance you get access to some exclusive surface modifications. These (Noise, Sepia, and Damaged) each have three stages.
I just really like the look of damaged lvl 2, as shown in the OP.