I started with 0x90 and tweaked the dimensions to match up with the life/death cards in the Growl game box. In order to keep things in scale, I had to shrink the overhang for labels significantly. I plan to use colored filament to demarcate the different expansions and the tab really helps.

Included are left- and right-hand tabs, as in the original.

Test prints were done at .2mm on an X1C using purple Inland PLA. They took ~15 minutes.