I have come up with a mass linking spell that will link the witches who say this spell together as one and will then have access to the power of other witches.
What you will need is a candle and a piece of jewellery.
Light the candle and take the jewellery such as a ring and put it on.
Say this three times:
By my sisters and brothers before and after me,
I lend them my power.
I bind this (Type of Jewellery (Ring).) to my power
and once removed, break the link
but when attached once more, replace the link.
As long as you wear this Jewellery, you will have access to all the witches power who have said this before and after you but in doing so, they will have access to yours. If ever you would like to break the link, take the piece of jewellery off and they will no longer have access to your power, but you wont either.