unprecedented [Adjective] + attack [Noun]

Strength Strength Dispersion
A:
6
CHISQ:
8.58
AWT:
18,160,101
TTEST:
1.66
G2:
7.89
FAWT:
2.99
MI:
1.63
LOGLOG:
4.22
JD:
0.53
MI3:
6.8
DICE:
0.1
RANGE: