I dont know if itll actually work well or not, but I think its a very interesting design choice nonetheless
Not for this set's limited experience, but I would place this card in a deck that could add loyalty with Proliferate ( Contagion Clasp and/or Contagion Engine ), maybe even add Doubling Season
Battles are won in nuance
Id be more inclined to play Regna, the Redeemer as a creature in a lifegain deck that also wants creatures, like with Soul Warden-type cards
The fact you can see how big your bonus is going to be before deciding on attacks is a crucial distinction that makes me happy to play this alongside cards like Dreadhorde Arcanist and Claim // Fame
With Seventh Edition, Wizards was forgoing all of the previous art that had previously adorned the cards, in favor of completely new art