All counters aren't method to protect SoS against nerf. This card is OP. Big OP.
Please make your case for why and how it is OP.
Please make your case for why the counters I listed are not valid considerations.
Counter should really be counter. When I have 60HP and use SoS then I have 28HP. How do You counter now? This counter really works when You have <10HP. What is more, counter should be better/or cheaper than card with ability. Explosion is a good counter, because it is often chaper than permament and works in 90% games. Holy Flash is VERY situational card and it is so weak. Buff HolyFlash and then we can talk that it is counter.
I personaly think, that Heal, Miracle etc. should be also use on opponent. Then it will be normal counter, not only situational.
Why it is OP? Play random game in Arena against 12 SoS and You will see
12 SoS means 24 turns without damage (and with healing!).
I can easily compare it with Aether Shield:
DS is targetable by popular cards like Explosion, Steal etc., SoS no.
DS can be avoid by gravity cards, SoS is nearly impossible to avoid (ohh, sorry, You can use Shard of Patience, but everything You do You still lose 2 turns
).
DS cost 6/5
, SoS cost nothing for Death Decks. Personally I think that it is easier to use SoS than DS.
DS works 3 turns, SoS works 2 but it is really 3-4 because of healing.
You can use DS only when You have
quantum, SoS can use everyone.
We can also compare this Shard with other Shards. SoS is probably the most powerful shard (or card!) in game. Making SoS more expensive (3-5
) didn't solve problem, because ability of this card is powerful.
I think that first concept with this card was better (You have 1HP). Remove healing, stand with 1HP after use SoS and then this card has got sense. It will be used also when You have 5HP, but when You didn't win in 2 turns You lose game. For me it is better and more fair.