While playing a Premier Draft match, I casted Longstalk Brawl to have my Stickytongue Sentinel fight my opponent's Coruscation Mage. I chose the non-gift option. Neither creature was modified. However, both creatures were destroyed during the fight. Unfortunately, this lead to me losing the match...I should also mention that his Coruscation Mage was cast with Offspring (the token still on the battlefield).
Logfile attached.
Thank you