Blount's ability: "...the defender is hit by your attack, even if he does not suffer any damage."
Ion pulse missle: "...if this attack hits, the defender suffers one damage and receives 2 ion tokens. Then cancel all dice results."
The way I read this, it hits regardless of die rolls, the defender suffers one damage AND is ioned. Rolling dice isn't even really necessary.
Edited by balindamood