Was that a multi dimensional being he saw

Back in 98 I was not there for this but my best friend who committed suicide we had another friend actually same guy who is a Christian.we were all like this trinity unfortunately they ended up splitting away and it was hard for me as I was friend with both.anyway so my Christian friend tells me about some ritual or affirmation one night and they decided to take a walk actually in the same area I originally found some mica rocks. Then he said he saw this giant figure turned looked raised it's arms said it look like the grim reaper with praying mantis like arms.i believe now that they summoned a multidimensional being or an alien.said they didn't stick around