Ice...Pick...doesn't...affect...crits...
Really bad idea on that part. Also, you didn't mention daggers for NON-crit Dagger Sin, which is more likely the viable option.
Suggestion:
Low Rate/,99/70
Triple hydra, Mummy(Any hit + card, hopefully not Howard) Double Hydra, Marina/Metaller
Primarily effective for squishy targets, And works well on inducing restraining status effects to skill spamming opponents. If MvP cards are available, use Doppel and Phree, TG instead of hydra also if easily possible. Atros card would be invaluable. As mentioned before, cloaking is ideal. Get the element of surprise, EDP whenever made possible, And use awakening potions/"performance enhancers". Anything that increases your attack speed is good.
Not too keen on equips, Your very likely tobe taking hits in your attack process, so having Magic/Physical Def sets on you would be a good idea, and as for cards- Anything that aids your offense. you need to lay em down quick. <____>
My little bit in ON-crit daggers. You rarely see Dagger Sins, and I love to promote them.
60-70~ Str
75~85 Agi
35-45~ Vit
65-70~ Dex
0-10 Luk