For land ideas I recommend Shambling Vent. I also suggest Zulaport Cutthroat for more life drain

What would I take out for Zulaport Cutthroat?

Honestly not sure. Maybe the envoys because it's still an ally and triggers Kalastria healer.

Scoured Barrens, maybe?

try a Soulmender, maby a Soul's Attendant or a Ephara's Radiance. also a Soldier of the Pantheon on the side board

for lands maby a Isolated Chapel or Orzhov Basilica, posibly aTemple of Silence, can't really go wrong with a Scrubland(there's a newer ones) since it doesn't enter tapped. a Temple of Silence might also be good.

gorilla_with_trample - None of the cards you mentioned are legal in standard.

Yeah, I saw that and decided that until Theros rolls out I'll use that scry land. I decided to add in Angelic Gift to replace Tandem Tactics because I already had enough things to pop lifegain with and the extra draw power while getting a flyer is pretty useful. Can someone think of any other changes?

lanimilbuS oh... oops, Format is not my first probity... or any protity, I mostly play in causal or sometimed legacy

but isn't Soulmender still legal in standard

gorilla_with_trample - Not anymore, it literally just rotated out with the addition of BFZ :P

This might sound like a silly, grammatically incorrect question, but a standard lifegain deck with out Felidar Sovereign?

Also, if you splash green, Feed the Clan with Alhammarret's Archive and Defiant Bloodlord is "Target player looses 20 life." And with the sovereign will hopefully put you over 40 anyway.

This deck has, so far, not enough lifegain mechanics in it to make Felidar Sovereign very viable because it is mostly life-stealing and hitting overhead with flyers. With splashing green to get Feed the Clan and then adding Alhammarret's Archive would be a nice fun combo but I personally prefer not to splash unfortunately. I will actually put 2-3 Alhammarret's Archive in for the drawing and extra lifegain and see how that goes while also throwing in 1-2 Felidar Sovereign. Thank you for the suggestions.

Sorin, Solemn Visitor? Seems really solid if your want the B/W lifegain

I intend on making a similar deck. More focus on my three Drana, Liberator of Malakir's than specifically on lifegain though. Hope your deck fares well.

14 of your 24 creatures being Allies, may I suggest Ally Encampment? I have found it useful for bouncing creatures back into my hand as a way to dodge removal or to re-use a creature to trigger any Rally effects. It also doesn't enter tapped, which a point is in its favor.

As for your sideboard, one thing I would highly recommend would be some enchantment-hate. Cards like Erase, Utter End, Abzan Advantage, Fate Forgotten or Duress should be mandatory in the sideboard of a lifegain deck these days because Tainted Remedy completely breaks your deck.

As an afterthought: You are far more likely to have Black sources of mana on turn one and two than White sources. However, most of your turn one and two plays require a White source. I'd consider, perhaps, trading out a Swamp for a Plains to even them up a bit, even after putting in some Ally Encampments, if you decide to use the latter.

Hey guys, here is the deck that I have put together Drana's Allies. Could some of you have a look there as well? There are quite a few similarities between my deck and this one. Like I mentioned though, my deck focuses less on lifegain and more on making attacks with Drana and ally creatures.

I would say that Tainted Remedy would be a pain in the side for this deck, like jcofer said. Be prepared to remove it.