Two teams of two mages. Two zones with an indestructible wall between them that blocks passage and line of sight. Each team has a single shared life total equal to their members' starting life totals added together minus 20.
Teammates share initiative and priority (this also means they take actions simultaneously).
Everything else is same as regular academy.
In summary, this variant is basically just playing two 1v1 academy matches at same time, except with shared life between teammates.
Enjoy!