The Aura

The "Cars for the Ultimate Sigmas" mod is all about gaining and losing aura. 

If you have less than 0 aura, you suffer negative effects, but if you have more than 1,000 aura, you get super effects and 5 extra hearts.

Things you can do to get the aura

Traveling 1,000 meters: +2 Aura (counter tracks every kilometer traveled)
Water Skill > 40 blocks (MLG drop): +100 Aura
Water Skill ≤ 40 blocks: +5 Aura
Eating an Enchanted Golden Apple (God Apple): +100 Aura
Popping a Totem of Undying: +100 Aura
Defeating a Boss (Dragon, Wither, Warden, Elder Guardian): +500 Aura
Curing a Zombie Villager: +5 Aura
Mining Ancient Debris (Netherite): +50 Aura
Placing 50 blocks: +50 Aura
Killing an Evoker: +40 Aura
Mining Diamonds: +30 Aura
Mining Emeralds: +25 Aura
Killing a Ghast: +20 Aura
Killing a Shulker: +20 Aura
Eating a Golden Apple: +15 Aura
Killing a Witch: +15 Aura
Killing an Enderman: +15 Aura
Eating cooked meat: +10 Aura
Drinking Milk or Honey: +5 Aura
Killing a monster with a sword or axe: +5 Aura
Mining Gold: +3 Aura
Mining Iron: +2 Aura
Planting a tree (Sapling): +2 Aura
Mining Coal: +1 Aura
Mining any block with the correct tool: +1 Aura

killing hostile mobs

Things you can do to lose your aura:

Player death: -500 Aura
Falling into the Void: -100 Aura
Killing a tamed animal (dog, cat, horse): -100 Aura
Killing a Villager: -50 Aura
Elytra collision with a wall at full speed: -30 Aura
Killing an Iron Golem: -30 Aura
Eating a Poisonous Potato: -30 Aura
Falling into lava: -25 Aura
Destroying a bee nest/hive: -25 Aura
Creeper explosion damage: -20 Aura
Eating a Pufferfish: -20 Aura
Drinking a Bad Omen bottle: -20 Aura
Eating a Spider Eye: -15 Aura
Killing an innocent animal with bare fists: -10 Aura
Drowning (lack of oxygen): -10 Aura
Eating raw meat / rotten flesh: -10 Aura
Catching fire / standing in fire: -5 Aura
Trampling farmland: -5 Aura
Breaking a block with bare hands: -5 Aura
Breaking a block with the wrong tool: -5 Aura

killing good mobs