Max 15d6[edit]
It's a bad idea to have a high cap for low level spells for metamagic reasons. Typically for you usual 1d6/lvl spell 1st levels stop at CL 5, 3rd level goes to 10, 5th level goes to 15, and 20 or uncapped beyond as a general rule. -- Eiji-kun (talk) 22:44, 27 April 2018 (MDT)