Rule evolution

Rule 601.3

Earliest archived Rules release: 2016-07-22 · 3 wording revisions · 0 renumberings

  1. Added601.3Details
    A player can’t begin to cast a spell unless a rule or effect allows that player to cast it. If that player is no longer allowed to cast that spell after completing its proposal, the casting of the spell is illegal and the game returns to the moment before the casting of that spell was proposed (see rule 719, “Handling Illegal Actions”).
  2. Wording changed601.3Details
    A player can't begin to cast a spell unless a rule or effect allows that player to cast it. If that player is no longer allowed to cast that spell after completing its proposal, the casting of the spell is illegal and the game returns to the moment before the casting of that spell was proposed (see rule 719720, "Handling Illegal Actions").
  3. Wording changed601.3Details
    A player can't begin to cast a spell unless a rule or effect allows that player to cast it. If that player is no longer allowed to cast that spell after completing its proposal, the casting of the spell is illegal and the game returns to the moment before the casting of that spell was proposed (see rule 720721, "Handling Illegal Actions").
  4. Wording changed601.3Details
    A player can't begin to cast a spell unlessonly if a rule or effect allows that player to cast it. and no rule or effect prohibits that player from casting it.If that player is no longer allowed to cast that spell after completing its proposal, the casting of the spell is illegal and the game returns to the moment before the casting of that spell was proposed (see rule 721, "Handling Illegal Actions").

Current in the latest available Rules
Unchanged since 2026-08-07.