[quote=Ellri]
just some quick criticism:It seems highly illogical to design something that chokes the user. We’d rather doubt any relic designer in the Old Kingdom would do so. Thats the biggest issue we have with the relic.
[/quote]

I do have to disagree with you on that one, as there are more relics that have to be charged in an ineffective way or have some odd "disorders" (take for example Shin's mask; designed for sneakyness yet it gives off a bright light) a few possible explainations for this could be:
- The Collar was designed for slave-evokers in the Old Kingdom; while they were allowed to gain powers, they had aweful restrictions like this that reminded them of their place and functioned as an effective restruction for their powers as well.
- It could simply be a flaw that wasn't intended to be this way. I can imagine that as with all crafts, not all products end up being the way they were intended, especially not if they weren't created by a master. Ren's relic could be such a relic that somehow managed to survive. 

Either of these theories could be possible, I think, but the point is that I find his flaw quite possible. If any of you still have some good arguments or simply don't agree with my little theories, I'll be glad to hear from you. Also, excuses for my late response Ellri and Athan, uni has been killing me lately x_x