Black White Life Gain (feedback please)

[Bobtroy]

Black White Life Gain (feedback please) 95 cards, 0 sideboard 12 {Swamp} 2 {Blighted Steppe} 9 {Plains} 2 {Miren, the Moaning Well} 25 lands 2 {Angel of Renewal} 2 {Defiant Bloodlord} 2 {Courier Griffin} 1 {Athreos, God of Passage} 1 {Blood Host} 1 {Abyssal Persecutor} 2 {Drana's Emissary} 4 {Stone Haven Medic} 1 {It That Betrays} 1 {Abattoir Ghoul} 3 {Tithe Drinker} 3 {Nirkana Assassin} 1 {Kalastria Nightwatch} 2 {Agent of Masks} 2 {Baneslayer Angel} 2 {Rotfeaster Maggot} 2 {Basilica Screecher} 4 {Bloodbond Vampire} 36 creatures 2 {Absorb Vis} 1 {Angelic Chorus} 2 {Reverse Damage} 1 {Ob Nixilis of the Black Oath} 3 {Swords to Plowshares} 1 {Ajani's Mantra} 3 {Sanguine Bond} 1 {Blind Obedience} 2 {Exsanguinate} 2 {Absorb Vis} 1 {Aurification} 1 {Sorin Markov} 2 {Tainted Remedy} 2 {Debt to the Deathless} 2 {Bile Blight} 1 {Liliana Vess} 1 {Angelic Accord} 2 {Last Breath} 1 {Elspeth, Knight-Errant} 1 {Ajani Goldmane} 1 {Elspeth Tirel} 1 {Death Wind} 34 other spells Sideboard Notes: New to magic, need opinions on this deck and tips on how to make better ones in future.

[Harukai]

I would put {soul warden}  Or something

[MommaB]

Throw in  {Last Breath} And  {Tainted Remedy} To give you an advantage with them gaining that life from stp and breath

Also lower the Cmc of your creatures like exchange some of them with  {Tithe Drinker} And  {Basilica Screecher} To give early game extort they won't catch up if you drop them low enough to swarm them

Also look into  {Sanguine Bond} With all the extort it's hilarious

And  {Bile Blight} And  {Death Wind} Are your best friends against green stompy and tokens