Yeah, "Mono" would really appreciate this. One thing I couldn't help but think about earlier is how 2 blocks is rather small. Maybe raise the counters on both to 3 but raise the costs by one each?
2 blocks is indeed rather small but quite significant when one considers the cost and the fact that unless you're using a creature spam deck, you're playing around 3-4 solid attackers. It's very important to consider that this shield completely nullifies the attacks of the first 2 creatures you play, and as most know, in a rush, this can be quite a loss, especially if they're fragile. Most rush decks tend to carry multiple copies of the same efficient card, so nullifying 2 attacks (of equal value) is about equivalent to the nullifying and healing of Antimatter, which costs much more.
Also, in Mono Water you have access to Flooding, limiting incoming attacks to around 5+1(weapon) and the shield can even block the weapon! If one manages to achieve a field lock with squids and freezes, weapons won't phase you either with Aqualink equipped. And hey, if something -does- goes through, new quanta to work with \
/
I would prefer to keep this as a cheaper shield for
Water despite it now being considered an element of Patience. One thing is being patient, another is getting phoenix-slapped while you're building up resources to defend against them, in an element that's not even known for its healing!