Phantom Stranger, The #14 (1971) Swamp Thing protoype

This book has a lot going on...the incredible cover is drawn by Neal Adams. The character which appears on the cover and in the story contained in this issue is a "Swamp Thing-like" character. Many in the hobby refer to this book as a featuring a "Swamp Thing prototype." That doesn't make too much sense given that the actual Swamp Thing arrived in House of Secrets #92 before the Phantom Stranger #14 featured the "Spectre of the Stalking Swamp." HOS #92 (1st app of Swamp Thing) was released in July 1971. Phantom Stranger #14 was released in August 1971. Both books were written by Len Wein. Yet another uncannily similar character, Man-Thing from Marvel Comics, made its debut yet one month earlier (June 1971), in Savage Tales Magazine #1. This book is graded 9.0 VF/NM with off-white to white pages by CGC.