if u find a color amplifier (red, yellow, blue) it increases all spells of that color by 20% ([red=ra/gi/foie][yellow=ra/gi/zonde][blue=ra/gi/barta]) any amplifier with a spell name on it increases the spell by 30%
When used on the correct barrier.
Others may not. You didn't say that they needed to be used on the correct barrier, so I did.