The trigger to pay 1R can be paid when your opponents attack, too, meaning they will do way more damage to other opponents but crucially the same amount of damage to you, as it wont increase when they attack you
The struggle might be trying to fit it into the existing removal rotation without leaving yourself with too many spells, or not enough copies of Sear
If you want a better combo then toss in Fury Storm, cast your commander a single time, cast Storm targeting any instant / sorcery and have the copy target the original Storm for infinite Storm copies
However, if you want to find one of the more elusive printings, then keep an eye out for the D23 Promo version of the card
No damage will be dealt, no cards will be discarded, and no permanents will be sacrificed
Archon of Sun's Grace Generating an army of lifelinkers isn't unique to Archon of Sun's Grace, but it's something this pegasus-lover does better than most