I see you didn't read the guide; I wrote it so you never be alone (since its almost useless) and always stick to one of your teammates (lane or jungle).
There is no major reason to max Stormguard, since it will deflect 10% of Catherine base HP (HP without gears, ie. 77 + 7*Lv) on every level. Higher level of Stormguard will only raise your burn damage and lower its cooldown a bit, and since you shouldn't use this ability offensively, Stormguard shouldn't be maxed instead of Merciless...
Posted: May 04, 2015