Eidolon of Countless Battles seems like a great fit.

Urza's Saga to tutor those 4 powerful artifacts.

Dust Bowl always useful with a lot of basic lands.

Hi SufferFromEDHD, Eidolon of Countless Battles is nice and considered before but scrapped in favor of other, similar cards. I also don't want to overdo it with the blank power/toughness boosts for Light-Paws.

I like Urza's Saga but there are some major drawbacks. First off, I don't have one and it's rather expensive to obtain one. Second, I don't have much use for its second ability in this deck. Third, I can't search for it in my library with Light-Paws. So in this deck, it's just a bit better than say Enlightened Tutor. Not really worth the money in my opinion.

Dust Bowl is not really my cup of tea; I mostly try to avoid cards that destroy lands, though when I play mono-red I sometimes make an exception to that principle.

Hey NV_1980, just circling back on this list. I made a similar deck to the one you've already brewed up, with a few small changes here and there. Noted a few cards below, but I really like the direction you're going with this!

Serra's Sanctum - an obvious inclusion for any white deck with an enchatment focus. Totally understand the (potential) financial limitations, but if your playgroup or LGS are okay with running proxies, give er' a rip.

Eldrazi Conscription - arguably the best/most bad*ss aura you can run and would synchronize perfectly with Light-Paws' ability and fast track a win in most scenarios

Angelic Destiny - more of a gimme for mono-white auras, but the repeatability & addition of flying/first strike make this a solid inclusion for a voltron deck.

Extraplanar Lens - (IMO) best non-green mono color ramp you can get in EDH with very little possibility of opponents being able to take advantage of it given the scarcity of Snow-Covered Plains at a normal commander table.

Got a few other variations from your list here if you're interested: https://www.moxfield.com/decks/lK8kh6_UZE-dwM1q-tdGnQ - hope this helps!

Thanks for the comments all_good666! Our playgroup is ok with proxies, so maybe I'll give Sanctum a shot. Though for clarity's sake, as I don't actually own one, I'll leave it out of the list above.

I feel a bit conflicted about adding Conscription. And believe it or not, it has to do with flavor. I recognize its power, but at the same time it feels like enchanting Light Paws with this 'corrupts' her, which just doesn't feel like the right thing to do when playing mono-white. I feel like a weirdo to bring this up, but there it is. Destiny on the other hand makes more sense, I'll have a look and see what I'd like to remove to make room.

Thus far I've not had any serious mana issues with this deck, so I'll keep Lens out of the selection for now, but I can see why it would have enough appeal to some to add it.

Thanks again for the comments.