Dimensional Sleeve

"Some men use petty tricks to fool their opponents, others don't bother with tricks and just create a pocket dimension to carry that dagger. I mean it's really not that hard." 

-Archmage Kirus

When you use this cantrip you can store an item of up to 6 lbs in a pocket dimension that only you can access. Each of your hands can store one item. You can use a bonus action to summon or put away an item into these dimensions. You can use a weapon that is freshly summoned to surprise attack someone, giving the attack advantage and if you are a rouge it will give you a sneak attack.