Ice Splitter Uses Over Octopus

An issue gunslingers have while training is mobs, since when they come too close, you can't attack. While octopus would be more useful for bosses or single targets, ice spitter can freeze 6 mobs a once and hold them there, meaning slingers can now train on flat maps with dense spawn, which was difficult before.

EDIT: In other words, using the example you gave, 'practice field beginner', try training there with good spawn. It's very difficult even with 1hkos and dash to get them away. and they're SLOW mobs. Fast mobs are incredibly hard, especcially when you can't 1HKO. I'd give anything for the ability to freeze a mob before they even started heading towards me.