Food Basics and Metro both have a promotion on the AnyCard Celebrate gift card this week. Until November the 15, get a $10 Metro or Food Basics gift card (depending which store you are shopping at) when you purchase a $50 AnyCard Celebrate gift card.
There is no limit to the amount of gift cards that you can purchase to get the free $10 gift card, but I believe you would need to do separate transaction in order for the $10 bonus gift card to be processed properly at the cash. The AnyCard Celebrate gift card is not actually a gift card itself. It is a card that you need to register online, and then use to swap it for the gift card of your choice.
The AnyCard Celebrate gift can be swapped for dozens of retailer gift cards, including Indigo, H&M, Cineplex, LCBO, and many, many more.