This deck maximizes Shen-Ra, Unbreakable to the fullest, often playing whole games with 3-4 power and still winning. Parry helps units pick up mastery and be an excellent combat trick. This deck is excellent and feels very strong.
The ShiftstonedEternal Power Calculator is a deck-building tool that visualizes your odds of drawing enough Influence and Power based specifically on the cards found in your deck.
I've been working on a similar list with the shell of Crownwatch Paladin-->Merchant-->Daring Gryffyn-->Aniyah + combat tricks and it does seem strong at the moment (https://eternalwarcry.com/decks/d/x-z_TWtieS8/hooru-folds-to-endurance). The primary difference is that I've been trying to build around and maximize Linebreaker's Shield... which probably doesn't line up in a Shen-Ra-based deck. Nevertheless, Parry is an interesting inclusion and I've been wondering about Parul's Choice as well, have you found it pulls its weight?
I’ve liked Parul’s choice. Basically if you always have 2 power up, their options become pretty limited. Shen-Ra is pretty busted in this since, as she always forces the opponent to make the first move. This build maximizes that aspect of the card, and Parul’s Choice plays into that.