Are there any magic cards that allow for direct manipulation of arbitrary counter types? Eg, "Add a counter of any kind to target permanent"?
At this point (2014) I would be surprised if something along these lines didn't exist in some form or another, its ridiculously powerful abuse potential notwithstanding.
Edit: My apologies for such an easily query-able answer. I was not aware of the existence o such comprehensive databases and easily-searchable databases like magiccards.info before posting these questions. I will surely do more research from now on. Thank you!