Snow cloak raises evasion by twenty percent, But a pokemon that holds zoom lens and is also slower than froslass (which is quite a lot of pokemons) will increase all of their moves by twenty percent, thus negating to snow cloak evasion raise. But weavile is super fast - even faster than froslass- in which case the only item you could untilize to increase accuracy would have been wide lens which only increases it by a measly ten percent. This means that there is no accuracy increasing item that would have increased weavile accuracy to one hundred percent against snow cloak D:. I kinda lucked out on the weavile sweep .