Reservation is a synonym of Reserve. Reserve is a different concept from Open. Open is the opposite of Cover. 
Magic is related to Illusion. Illusion is related to Visual. Visual is related to View. View is related to Reflection. 
Reservation <--Synonym--> Reserve <--DistinctFrom--> Open <--Antonym--> Cover 
Magic <--RelatedTo--> Illusion <--RelatedTo--> Visual <--RelatedTo--> View <--RelatedTo--> Reflection 