Kabam has now revised the rewards for the completion and exploration of Act 6. Act 6.4 is set to release next week (March 11), and then people would be able to explore the whole chapter.
Comparative View old and Revised Rewards?
What is a Nexus Hero Crystal?
For those who forgot or doesn’t remember what a Nexus Hero Crystal is: This crystal will let you choose 1 champion from 3 random champions. So it’s kind of a selector.