I was on turn 2 of a game on Android. I had no creatures out. My opponent had a great divide guide and another one drop. When I went to use heartless act to destroy the divide guide, I got the warning asking if I was sure I wanted to target him, which I thought was odd and even canceled to make sure I targeted the right creature. The spell resolved and the divide guide was not destroyed. There was no effect. Also it's worth noting that the divide guide did not have counters on it, so it was not the other ability of heartless act.

Im thinking maybe because the divide guides ability modifying things confused heartless act into thinking it had counters or something, but then why did I get the warning message? I dunno though. Thank you!

Also I tried to post the log, but it won't let me.