Simmons, Ken: Onyx Magazine No. 8, July 1999 ©1999 Ken Simmons Softcover, saddle-stitched, 8.5x11"

Image courtesy eBay seller Floshubby

Comments: Onyx was a quarterly magic magazine Oct 1997 through April-May-June 2000 for a total of 11 issues.
Note: there's a full contents listing for all issues over at Denis Behr's Conjuring Archive.

Contents (from front cover, numbers are not page numbers):

1 Forced Ace Trick (J.K. Hartman)
2 The Original Twist Pass (Wesley James)
3 D.E. Triumphs! (Don England)
4 Excelling In Spelling Fortelling (Marty Kane)
5 A Piece Of The Action (Peter Duffie)
6 Free Will (Peter Duffie)
7 Bankrupt! (Ed Andres)
8 Double Or Nothing (J.K. Hartman)
9 Macmillan Unmoved (Wesley James)
10 Triumpharo (J.K. Hartman)
11 The H.S. Prediction (Aaron Goldberg)
12 Jacks High (Peter Duffie)
13 Phantom Stab (Peter Duffie)
14 Snapper! (Christian Ehret)