8th Ed. Quick magic question

[Baggies]

When rolling for the winds of magic do you roll 2d6 for each wizard, or is it you role 2d6 first then an extra d6 for each wizard added a dice of a result of 6????

 

[Eladimir]

You roll 2d6 for the whole table.
Whoevers turn it is gets the total.
Other person gets the higher of the two dice.

 

[Eladimir]

Then each wizard roles a d6 and gains an extra power/dispel dice if they roll a 6

 

[n810]

2d6 first then an extra d6 for each wizard added a dice of a result of 6! <-- this