I like the hero call combat trainer. Scary cards appear on the river, each with varying degrees of scariness. It really forces you to combo count, and analyze Bully's actions on the runout. You have to discard combos from Bully's range. Then you decide if his river lead bet is supported by a solid range, or if his story makes little sense.

This scenario also reinforces the idea that you should try to avoid capping your own range. In every hand you 3bet Bully's open, and then Cbet when he checks the flop. But then you check back the turn. That always looks like pot-controlling a middling hand. When the scary card appears on the river, you have invited Bully to lead the river and put you into a hero-calling decision for a lot of chips. Your hero-calls and hero-folds won't always be right. By checking back the turn you have given Bully the opportunity to put you into tough spots where you will make a lot of mistakes.

This combat trainer also teaches us the way that aggression wins in no-limit hold 'em. If you're the bully, you are forcing your real-life opponents to use advanced hand-reading skills that are beyond the ability of many of them. You confront your opponents with the uncomfortable choice between letting you print money with their folds, or playing back at you and losing big pots to you when you show up with the goods.