Proper Summon (mechanic)

Proper Summon is a mechanic referring to the proper primary summon of a monster. Some proper summons are implicit, such as when a regular Ritual/Fusion/Synchro/Xyz/Link monster is summoned via the proper summon method. Some are explicit but (mostly on older cards) not termed as "proper summons", as via the text "(this is treated as an Xyz Summon)'. Finally, sometimes the term is used explicitly, such as in the effect "Special Summon 1 Level 1 Synchro monster from your extra deck (Proper)."

A Proper Summon can be a normal or special summon.

A monster being summoned properly is what allows it to be special summoned from secondary places with card effects that do not ignore summoning conditions.