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casting-stack-conditions

Implement MTG casting pipelines, stack resolution, and waiting-for state handling.

Updated Aug 27, 2026
Search Tags:#targeting#casting#waiting-for#stack-resolution#mtg-rules-engine#modal-abilities#mana-costs
One-click install
npx skills add https://github.com/gamajose/MagicTheGathering --skill casting-stack-conditions-gamajose
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: casting-stack-conditions
Source: https://github.com/gamajose/MagicTheGathering/tree/main/.claude/skills/casting-stack-conditions
Command: npx skills add https://github.com/gamajose/MagicTheGathering --skill casting-stack-conditions-gamajose

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Casting, stack, and ability-resolution systems in MTG rules engines are complex and error-prone. This Skill provides a structured reference for understanding and implementing the casting pipeline, stack behavior, and condition handling to ensure CR-correct gameplay.

Core Features & Use Cases

  • Reference for the end-to-end casting flow from hand to stack to resolution, including WaitingFor state handling and mode/delay interactions.
  • Guidance for extending with new costs, optional costs, and sub-abilities, plus modal and resolution-time interactions.
  • Use Case: implement a new cast spell with a modal choice and intervening-if conditions or handle activated abilities with mana and tap costs.

Quick Start

Follow the Casting, Stack & Condition Systems guide to implement casting flow and resolution logic in your MTG rules engine.

Frequently Asked Questions about casting-stack-conditions

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I implement the MTG casting flow from hand to stack resolution?▼

The MTG stack resolution process handles spells and activated or triggered abilities by coordinating WaitingFor state interactions, mode selections, and delay interactions through structured resolution pipelines like build_resolved_from_def.

How do I handle modal abilities and intervening-if conditions in an MTG rules engine?▼

Yes, you can handle activated abilities with mana and tap costs by using the handle_activate_ability function, which integrates cost payments and effect resolution within the same structured stack framework as spell casting.

What is the best way to manage WaitingFor states during stack resolution?▼

Targeting and mana costs in MTG rules engines are managed through dedicated functions like handle_select_targets and pay_mana_cost, which validate legal targets and process mana payments before pushing effects onto the stack.

How do I add new optional costs and sub-abilities to an existing MTG casting pipeline?▼

You should use a structured casting and stack resolution system when building an MTG rules engine to prevent common errors in complex scenarios involving modal choices, triggered effects, and multi-step interactions.

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