@Kratylus
Permanant is a possibility, but it would definitely need to be -1 in that case. Also, the risk would be there of this being too strong against mages, which are not the primary card type that needs a counter. My suggestion was designed to force a slight tempo loss against mages and FT if you want to keep benefitting each turn. Maybe this is a good case to make the shield ability cost 1cc if it sheilds -1. A case could also be made for a more expensive active that shields fire damage more heavily.
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