All the other item level 575 artifact neck/waist sets now give +7 ability scores. Valindra set gives +2 Int, +2 Cha, +3 Con. Black Ice set gives +2 Cha, +5 Con. Etc.
Like the others, Baphomet's Infernal Talisman used to give Action Points,
but it did not get patched.
This set currently gives only +2 Str, +2 Con.
The waist should be +2 Str, +2 Con, and the neck should be +3 Con.