When is stacking items like Rod of Ages inappropriate in LoL?
Is stacking items, like Rod of Ages, considered bad gameplay?
Solution 1:
I wouldn't recommend stacking RoA on any characters really. In order for the item to get to its full potential, you have to have it for 10 minutes. Thus if you obtain it by 10 minutes, at 20 minutes you will have it maxed. So if you get a second at 15 minutes (which would be very fast) it will be ready at 25 minutes. In the time it takes for a second RoA to mature you could have beefed up your armor AND health with something like Sunfire Cape, or your armor AND mana with something like Frozen Heart. RoA is a great item, but other items give benefits that it just doesn't.
Solution 2:
At all times, you should only ever have one Rod of Ages and it should be bought before you are level 14. The main reason Rod of Ages helps you is because of an early catalyst which gives hp and mana regen. Once combined it is still not worth the amount of money invested in it for at least 7min. The fact that it is so expensive and not worth the inital cost until time has past makes stacking Rod of Ages illogical, unless you know your game is going to last 2 hours.
Solution 3:
I think if that's all you build, without boots or pure damage/defense, then yes it's bad gameplay. You need to build what you can to win the game. The only people I can see you building more than one Rod of Ages are Singed, or Ryze, as they both benefit largely from everything that RoA gives you.