Card Practice Arena

Mock Battle Arena · Deck Practice Room

The card practice arena is a vast, isolated simulation space with paid difficulty tiers, customizable environments, deck warnings, and opponents unable to directly injure crawlers.

Story so far

The Royal Court enters through a new door in Cuba Libro's generated saferoom hall. Although Team Sister Ines enters at the same time, each squad receives a separate enormous metal hangar.

The system warns that the Royal Court lacks a full deck and contains a consumable card. Simulated mobs cannot harm crawlers directly, but the environment and self-inflicted damage remain lethal.

Donut transforms the chamber into the Arena of the Eulogist, then an abandoned version. Easy opponents cost one thousand gold, equal-deck opponents cost two thousand, and challenge opponents cost five thousand while unlocking additional options after victory.

Appearance

A cavernous corrugated-metal hangar that transforms into configurable outdoor battlefields beneath a protective dome.

Role

The arena isolates squads and safely tests deck handling, totem obedience, buffs, and opponent difficulty.

Relationships

The Royal Court of Princess Donut — The squad performs its first two deck tests here.

Arena of the Eulogist — This is Donut's first selected environment.

Mock Battle Difficulty — Its three initial tiers set cost and opponent strength.

Sources — 2 recorded facts, by chapter

Chapter 10

Every saferoom gains a paid mock-battle arena where incomplete squads may test totems, although consumables and cooldowns remain fully real and irreversible.

Chapter 11

The card practice arena is a vast, isolated simulation space with paid difficulty tiers, customizable environments, deck warnings, and opponents unable to directly injure crawlers.