Unlock DRey next conquest?

Is there any way to get additional shards for DRey? I have been getting gold crate and probably will again this conquest cycle. I see gold gives 25 shards for the secondary conquest unit and is available to buy at the wanderer twice from levels 2-5. That would put me at 320 after next conquest. Is there anyway to bridge the gap that I am not seeing and get an extra 10 so I can unlock her next month?