Editing House Rules (section)

==1) Casting Spells==
#The restriction about casting more than one spell on your turn is lifted.  In other words, if you want to cast a spell with your ACTION, and then another spell that has the ability to be cast as a BONUS ACTION, then you can.   This exemption only applies to ACTION plus BONUS ACTION.  You can't cast two spells that require a full ACTION to cast in the same turn - ''even if you are hasted!''
#ALSO, If you have used all your spell slots, you can still cast a spell - but at the cost of gaining levels of exhaustion per level of spell slot you would have used.  (see also in Exhaustion below)