u/Individual_Pool9132

While it is possible for the mobs to attack the bot after being summoned on the ground, who they target is inconsistent and most often it results in them attacking other random nearby players.

However, if you summon the mobs on top of the stone ledge behind the post, you force the mobs to aggro the casino bot because this is the only reachable target for them.

There are several ways to get up there, I jumped from the sign. The jump from the sign to the stone ledge is deceptively difficult, you probably want to practice it a few times. Quickly tap space bar then W, while standing at the very edge of the sign and aiming for the "+" engraving on the stone.