mysterious [Adjective] + island [Noun]

Strength Strength Dispersion
A:
7
CHISQ:
33.66
AWT:
19,066,736
TTEST:
2.25
G2:
18.58
FAWT:
2.85
MI:
2.73
LOGLOG:
7.68
JD:
0.45
MI3:
8.35
DICE:
0.14
RANGE: