Explain Chex Mex please, someone, anyone...

Im with Pseudot on this 1, it all comes down to how badly u want those Traya shards, but it is worth the extra time to get Traya. Also, I definitely wouldn't restart 50 times, or even 25, ever time i try the team, in any tier besides heroic. I would do just enough to get myself accustomed to the strategy, this way, when it is heroic, hopefully I won't have to restart that many times.