Uncommon card for control archetype.

While it may be pushing into Rare and CMC matters theme, I think it's more elegant to me to have something like:

WU Instant Counter target spell with CMC 3 or less, then gain life equal to that spell's converted mana cost.

Over the past few months, separate from this set, I've actually developed a multicolor cycle of "Counter target spell with 3 CMC or less, then (effect) based on its CMC". The red one deals direct damage, the green one distributes +1/+1 counters, and the only missing one is the black one. But I'm not sure it'd be fitting for this set.

It's an interesting idea. Personally I think that I'd rather have a cancel type counter at uncommon, just to fit the archetype that we're trying to get across in . It is an interesting idea though and it could be explored at rare too.