Everythingamajig (a)

2, T: Move a counter from one permanent onto another. If the second permanent refers to any kind of counter, the moved counter becomes one of those counters. Otherwise, it becomes a +1/+1 counter.

3, T: Put a +1/+1 counter on target creature.

4, T: Proliferate. (You choose any number of permanents and/or players with counters on them, then give each another counter of a kind already there.)