Play expendable relics, sacrifice them to
Clear the Way, which gives a pair of 9-cost units that you can
Reweave into
Kairos, Grand Champion or
Fair Exchange into an expensive unit of your choice.
Waystone Gate also plays an 8-cost unit when it is sacrificed, which can also be reweaved or exchanged (but not for Kairos).
Mulligan for a hand that has decent influence and that has relics. The deck has lots of relic synergies, and it does nothing if you have no relics. Justice influence is a low priority early on.
Some other versions of the combo can
Clear the Way more quickly, but I think this version has a higher card quality so that it is decent even without the combo. I put some alternative card options in the "sideboard" part of the decklist.