Doublesoul

Whomever the user touches (self included) creates a aura-like image of the affected person behind them. This image copies everything the affected target does. Afterwards the original target affected by the spell can not be affected by the spell until a long rest. The double created doesn't have it's own hit points nor can it act on it's own, it simply copies anything the original target does.

1. The double can assist with any action the original target is performing (example: strength checks are rolled with advantage and the user doubles the modifier needed)
2. Use spells (however if the spell is a higher level then the doublesoul then the image disappears after the spell is used. if using a spell on the same or lesser level then 1 minute is taken from the duration) 
3. Attacks (if the original target uses a ability or skill the double will copy the skill as well however 1 minute is taking off the duration)
Any effect/feat/ability that comes from a spell or a attack is used and doubled as well. hit rolls on dice from attacks and spells only needs one roll but damage is rolled separate.

At Higher Levels. When you cast this spell using a spell slot of 6th level or higher, The double stays longer for a extra minute. If a level spell of 8 or 9 is used then the double is capable of critical hits along with the original target. if 5 to 7 is used than the double is incapable of dealing critical hits but only does max damage instead.