S-Rank Omniframe
This chart is going off of Initially Obtaining the S-Character starting at 15,000 on Pity. Each Copy obtained after will net you 30 Shards.
Phantom Pain Scar can be traded for up to 30 Inver-Shards belonging to a chosen character in the Phantom Pain Shop. In other words, you can Evolve an S-Rank Omniframe to SS-Rank for FREE. We highly recommend doing this where possible. This removes +1 copy from your total.
Notes:
[1][2] 15,000 + 30 PPC shards get you to SS free