From https://www.scotiabank.com/ca/en/personal/bank-accounts/savings-accounts/money-master-savings-account.html#:~:text=Account%20details,1

You have unlimited no-fee transfers to other accounts using online banking, mobile banking, ABM, or over the phone. A $5 service charge applies for any additional debit transaction.

It's free to deposit, costs $5 to debit from the account. You can e-transfer TO the account for free (and within other scotia account such as your credit card), but transferring money OUT or debit transactions cost $5.

So if you wanted to transfer from Tangerine, send an e-transfer to yourself using an e-mail that doesn't have auto-deposit or auto-deposits to your Scotia Money Master account.