The most useful quick reference sheet out there. It has landscape or vertical to use as a DM screen with the 4 page option and/or you can do as I have done and laminate the double sided horizontal copy and give to all my players. This tool is especially invaluable for players new to D&D but even for us older fellas that can't memorize every detail like we used to. I was looking for this, I found it, and now the most useful tool in my catalog of PDFs and copies from core rulebooks. Buy it! Worrh $3 in my opinion. For DMs i suggest "DM Screen of Greater Referencing"