Changes

Indicates the monster cannot be [[Summon]]ed or [[Normal Set]] with the listed Summoning mechanics, which may include Normal Set. The condition may be followed by an "if" or "unless" clause to define additional parameters that, when applied, prevents or permits monster's Summon with the listed Summoning mechanics.

For Monsters monsters that cannot be Normal Summoned but can be Normal Set, earlier card texts like "[[Mystic Swordsman LV6]]" indicate this with the text "(but can be Normal Set)", while "[[Amaterasu]]" does not. For monsters that conditionally apply a "Cannot be Summoned" condition, there are two written formats for such a condition that use "if" and "unless" respectively. They define additional parameters that, when applied, prevents or permits monster's Summon with the listed Summoning mechanics. In both cases, the monsters can be Normal Set. Cards with "Cannot be Summoned if" conditions are only used in the context of "Cannot be Normal or Special Summoned" conditions.

* "This card cannot be [''Summon mechanic'']." → "Cannot be [''Summon mechanic''] ."* "Cannot be Normal or Special Summoned [''optional if clause'']."* "This card can only be Normal Summoned, Flip Summoned, or Special Summoned when [''clause'']." → "Cannot be Summoned unless [''unless clause'']." (as used on "Guardian" monsters; introduced in ''[[Legendary Collection 3: Yugi's World Mega Pack]]'')