Dice

Dice are the central mechanic of Die in the Dungeon. Your deck is made up of dice, which can be added or removed throughout a run. You hold up to five dice and can usually place only three dice each round. Dice are placed on the board and take effect at the end of your turn. Used dice are replaced at the start of your next turn. Every dice is made up of five core functions: Type, Subtypes, Tier, Title and Rarity.

Types
Attack Dice (Red): Deals the damage for the amount rolled.

Block Dice (Blue): Reduces damage taken by the amount rolled. Remains between turns, capping at your maximum health.

Heal Dice (Green): Heals the player for the amount rolled.

Boost Dice (Purple): Adds its value to any dice for the amount rolled. Only affects dice in a certain range determined by its value.

Mirror Dice (Grey): Copies a dice four spaces from them. Has empty sides on lower tiers when Hollow.

Terrain Dice (Pink): After the turn it is played, the area it was played in will get a buff of +X where X is the number on the die.

Subtypes
Dice subtypes are extra effects that dice can have.

Heavy: Dice with this subtype remain on the board after it's been used, affecting future rounds. After each round its value is reduced by one, leaving the board upon reaching zero and returning to your dice deck.

Glass: Dice with this subtype are removed from your deck for the rest of the fight when used.

Hollow: Dice with this subtype have no energy cost, allowing you to place more dice in one turn.

Tiers
Dice come in three Tiers: Basic, Silver and Gold. Dice in your deck can be upgraded by choosing "upgrade dice" perk in post-battle rewards.

Basic Dice have values between one and two.

Silver Dice have values between two and four.

Golden Dice have values between four and six.

Exceptions:

Boost Dice usually increase up to three, although Heavy Boost Dice may go up to four.

Hollow Dice only typically increase up to four.

Mirror Dice are always four, unless they are Hollow, in which case it gains higher chances to have a numbered roll.

Titles
Sometimes, when you choose the "get one new die" option in post-battle rewards, you are offered a special dice. These are usually gold and have unique values compared to other gold dice.

The Lucky One is a Heavy Block Die with two different variants. One variant has three sides with a value of one and three sides with a value of six. the other variant has one side with the value of one and five sides with the value of six.The Holy is an Attack Die that has the value of six on all sides.

The Overkill is a Heavy Attack Die that has three sides with the value of five and three sides of the value of six.

The Miracle is a Heavy Heal Die with the values of 2/3/4/4/5/6.

The Trickster is a Heavy Boost Die with the value of three on all sides.

The Poop is an Attack Die with the value of one on all sides, but becomes The Holy Attack Die if upgraded.

Rarity
All dice have a certain rarity that affects the chance of appearing as a reward when choosing the "get one new die" option in post-battle rewards, marked by the style of the die's background.

Dice with higher tiers or titles are rarer at earlier stages.