Tracers are legal to possess and use, where safe to do so. There is no supply of legal 22lr tracer currently available in Canada. They are available at Cabela's stateside, but still very pricy, and illegal to bring back. Those very tracers also get some poor reviews for lack of brightness/reliablility. NRCAN will almost assuredly not allow ANY attempt to import them legally.
So, YES they are legal, NO you can't get them.