Cannot use MTX on Item Aura

I have the Disciple Forcefield mtg and i like it as it is, but sadly i cannot use it when using this beauty.

I made a quick search and could not find a thread about it. Is there a solution or may a GGG member look if it will ever be possible?

Sadly there's no solution to your problem currently — skill effect MTX only work with skills that come from gems.