a2a2cfd5_ter_or_Blood___Obsidian_Portal__Description
[Ritual Mastery] 7 [Feat] Summoning [Description] 
You may enhance or diminish the size of you summons by one category from their natural state by adding an hour to summon time. You can also now summon Huge and Tiny constructs. These modifications grant stat and hit point bonuses/penalties (see table below). This can be performed on your familiar to alter it by one category.
Summoning | Water or Blood | Obsidian Portal
Description