Resources required for 6*

With these rank down tickets and finishing act 5, I have the ability to Rank 5/65. I am hesitant because of the looming 6* champions. Can we get any information regarding the resources required for the these 6* champs!! Will t5b required for these champ? Some advise and guidance would be welcomed. Also how many shards will be required for a 6*? More questions than answers ..
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They did answer the "How many shards for a 6*?...it will be 10k...just like 5*.
No idea about everything else...