how to cast level 1 upgraded spells on mac?
 

when I upgrade a spell to level 2/3 I should be able to cast level 1 version with <ctrl-click>. however ctrl-click is interpreted by macosx as right-click. is there any way to change this mapping to have a key other than ctrl like alt/cmd be the level-1 version? or _any_ trick at all to cast that cheap level 1 version when mana's tight?

Shift key will do it for you.