Spoiler for Hidden:
Guys, don't you think you forget a tiny, minor detail? These shields do not just provide a low DR and reflect damage dealing spells. They also can't be destroyed or stolen . . . [n]o buff needed. The only thing it may needs a change, this is Jade Shield's price of 7 
quanta, it may need a reducion to 6 in order to be more easlity available out of mono- decks.
Which would be a buff. Your point on indestructibility is quite valid; however, experience doesn't seem to show that to be powerful enough to make these shields widely used. They just aren't strong enough for top-level competitive play, unless you're willing to build your entire deck around them (and, really, there's pretty much only Quint/SoW or Anubis/Sow for that) - how much of a pain is Jade Shield to play against, as opposed to any other? Unless you're playing a Mono 
deck, based on Psion, it'll barely slow you down.
For comparison, let's use 
:
DR: Shield 1; Emerald Shield 1; Reflective Shield 0
So, 1 DR is worth 1 
+1 card. Reflective Shield costs 1 
+1 card; so, Reflection and Immaterial, together, are worth about 1/3-1/2 .
Yet, Emerald Shield costs 5 +1 card, for 1 DR (worth about 1/2 ), and Reflection + Immaterial (worth about 1/2 - by extension, worth about 1/2 ). What explains the other 3(pointsomethingorother) quanta cost?
Mirror Shield is essentially the same as Emerald Shield; yet, even after accounting a -1 quanta cost for upgrading, it still costs 1 less than it should (balanced against Emerald Shield). Is Mirror Shield OP? No. So, perhaps, Emerald is UP?
The more I think about it, the less these shields make sense.
The reduction of Jade Shield's price is not badly needed, it was just a suggestion if you think JS needs a small buff and it is mostly for making JS more easily available in duo-trio decks. About the imbalanced-cost thing, consider the following:
1 unupped card + 1 DR cost 1 alone (Shield)
1 upped card + 2 DR cost 5 alone (Tower Shield)From the above, we can see why the upped Jade Shield costs 7
in comparison with the unupped Emerald Shield which costs 5
; it is because it offers 2 DR instead of 1 DR.
Now, let's compare the Mirror Shield with the Emerald Shield. Both have exactly the same effects (1 DR, reflect spells, can't be destroyed/stolen), however Mirror is an upped card, so it costs 2
while ES costs 3 more (5
) because it is unupped (+2 quanta) and because
has to pay 1 quantum more than
for an immaterial effect (keep in mind that immaterial is considered in-element for
but out-of-element for the rest of the elements, including
). Same goes with Jade shield; 5
quanta is about 4
quanta, so a +2DR Emerald Shield should cost 5 + 4 = 9
quanta, but because Jade is upped (-2 quanta) it costs 7
at the end.
The only thing debatable in my opinion is to consider immaterial as both a
and
in-element effect, so both Emerald/Jade Shields should have their costs reduced by 1 (that would make their costs 4
and 6
respectively).
EDIT:
By the way, ES and JS can be proven really useful in Bronze arena, since lately is full of Psions and SoWisdoms. Furthermore, Deflags and Steals are always present in Bronze too, so a JS can be a worthy choice for a farming deck. Personally, I work in a mono-life JadeShield-based deck and I will inform you how well it went.
Poll
