There are several variations of "Mod 15" created by different modders (such as , Fm15 , or various Discord community patches). Consequently, drop lists can vary slightly between versions. However, most versions share a common core structure regarding how Starchips and Drops work.
: Best chance is from Kaiba via S-TEC (24/2048) or S-POW (1/2048). Yugioh Forbidden Memories Mod 15 Drop List
Highest chance from Seto 1 or Kaiba (SA-TEC/POW). There are several variations of "Mod 15" created
: Dropped by Pegasus or Isis with a BCD rank (32% rate). or various Discord community patches). Consequently