Interesting card concept, but I feel the mechanic doesn't fit aether that much. More earth, maybe? Aether is elusion, not reduction, IMHO.
I don't really get the point of this card. It doesn't have awesome HP or attack. It protects it's HP a little bit, but who cares about protection if aether has imortality? We could simply use the Immortal if we wanted protected creatures. If we didn't, we could use phase recluse for some fast damage.Aether doesn't really need this. Perhaps an other element like time might make use of this. (Will need another name though)