I have been playing since the start and today I got three legendary engrams I was soooo happy but when I got to the tower and handed them in I got all RARE'S now I think this is stupid due to its legendary so I should of got at least 1 out of 3 but no, i'am just saying it's VERY unfair to not get a LEGENDARY from a LEGENDARY engram.
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And sometimes they turn into exotics. It's random.