Cast Peer into the Abyss by paying ({4} magic symbol) ({B} magic symbol) ({B} magic symbol) ({B} magic symbol) , targeting an opponent whose library size is larger than or equal to their life total.
Resolve Peer into the Abyss, causing that opponent to draw cards equal to half their library size and causing them to lose half their life total, rounded up.
Orcish Bowmasters triggers for each card drawn, dealing 1 damage to the opponent for each card drawn this way and putting that many +1/+1 counters on an Army you control.
The opponent loses the game due to having zero or less life.
Results
Near-infinite +1/+1 counters on target Army you control.