Mono Argent (21-2 Scion's Arrival)

Pretty fun deck.
Justice has some really good RNG as far as Scions go, i.e. all Scions are at least somewhat useful, unlike other colors.
Playing Sigils out of your deck thins it, as well as giving you faster Scions.
You wanna go for a starting hand with Hojan or Icaria, and redraw the hands with Sediti and Svetya.

One loss was against a really fast 8-Kaleb with loads of units on board, and another was against an Unblockable unit - I can't remember the details right now.