Expert take
Rammus is a decision champion, not just an anti-AD tank. When played well, he gives his team a very clear button: find the angle, lock the target, force the conversion. When played poorly, he becomes predictable, too linear in his entries, and dependent on follow-up that never arrives. His real value comes from discipline: not showing Powerball too early, not wasting taunt on an irrelevant target, and not confusing durability with permission to enter alone. Pick Rammus when you can already see how fights will start and who must be punished. Avoid him when your only plan is hoping the enemy hits you for free.