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 consider that 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.
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.

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.
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.