That depends on whether you want a monthly plan or prepaid service.
On prepaid, you buy the SIM, activate, that's it that's all. No documents required.
With a monthly plan you'll need something to do a credit check. If you have a Canadian credit card already that'll work, I assume you probably don't have a driver's license or a Social Insurance Number being an international student, but I've seen accounts activated in store using a passport number.
Hi there... You can approach the store with your Passport and Landing papers, then you will see if you are eligible to have the services, and if you are going to open a Bank account in Canada, you may inquiry with Scotia Bank for the StartRight program.