Chance sigil 1 crits = 20%
chance it does not crit = 80%
Chance sigil 2 crits = 80% (chance the 1st did not crit) * 20% = 16%
Then chance sigil1 crits (20%) + chance sigil2 crits (16%) = 36%
Hope that made sense
Chance sigil 1 crits = 20%
chance it does not crit = 80%
Chance sigil 2 crits = 80% (chance the 1st did not crit) * 20% = 16%
Then chance sigil1 crits (20%) + chance sigil2 crits (16%) = 36%
Hope that made sense