Commander: Dina, Soul Steeper. Lifegain Aristocrat black green deck

The target of this deck is dealing damage by gaining life. Since Dina, Soul Steeper's triggered ability is to have your opponents lose 1 HP each time you gain one or more life, it is important not to gain much life with one effect, but to have several effects that let you gain 1 or more life. Also, Dina, Soul Steeper has an ability that let you sacrifice creatures, so cards with good death triggers are good to go in this deck.

Damage Output

The main damage source is obvioulsy Dina, Soul Steeper and the deck plays around her triggered ability. Lifegain sources are listed in the Section Life Gain.

Dina, Soul Steeper has the ability to increase her power by sacrificing other creatures. This can kill opponents by commander's damage. For this purpose, there is the Section Big Creature.

Kokusho, the Evening Star deals 5 damage to each opponent on death. Also, let you gain life for 6 HP total with your commander on the battlefield.
Vindictive Lich deal 5 damage to one opponent.

Life Gain

Riveteers Overlook, gain 1 HP.
High Market, gain 1 HP when sacrifice a creature.
Zuran Orb gain 2 HP when sacrifice a land.
Blight Mound generates Pest tokens that let you gain 1 HP on death.
Lifegift, gain 1 HP each time a land enters in the battlefield.
Infuse with Vitality, gain 2 HP.
Tamiyo's Safekeeping, gain 2 HP.
Tend the Pests generates Pest tokens.
Pest Infestation generates Pest tokens.
Blood Artist
Deathgreeter
Disciple of Bolas
Essence Warden
Haywire Mite
Kokusho, the Evening Star
Savra, Queen of the Golgari
Scavenging Ooze

Effect of Blight Mound, Blood Artist, Deathgreeter, Haywire Mite, Kokusho, the Evening Star and Pest tokens are doubled by Drivnod, Carnage Dominus.

Big Creatures

Wall of Blood can increase its power as you pay life. You can kill an opponent with commander's damage by paying 20 HP and sacrifing it to Dina, Soul Steeper activated ability.
Daemogoth Titan has 11 power with a sacrifice ability.
Drivnod, Carnage Dominus has 8 power
The Gitrog, Ravenous Ride has 6 power and wants to attack each turn if possible
Vogar, Necropolis Tyrant can increase its power when creatures die on your turn. Effect double by Drivnod, Carnage Dominus.
Body Launderer can increase its power when a non-token creatures dies. Effect double by Drivnod, Carnage Dominus.
Carrion Feeder can increase its power by sacrificing creatures.
Scavenging Ooze can increase its power by activating its ability.
Prowling Geistcatcher can increase its power whenevee you sacrifice a token creature.
Insidious Roots generates Plant tokens that increase their power when one or more creatures leave your graveyard. Cards with ability to play with graveyard are listed in Section Graveyard.

Sacrifice

Along with Dina, Soul Steeper, other cards with the ability of sacrifice creatures are:

Grim Backwoods
High Market
Phyrexian Tower
Culling the Weak
Saw in Half don't sacrifice, but destroy a creature. Anyway it shall be used on your creatures.
Tend the Pests
Village Rites
Deadly Brew
Eldritch Evolution
Living Death
Primal Growth
Rise of the Witch-king
Victimize
Carrion Feeder
Daemogoth Titan
Disciple of Bolas
Haywire Mite
Sakura-Tribe Elder

Graveyard