There are no accessories but it comes with a 3-year warranty and some documentation.
I believe Not An Apple Fan was reporting 155w at stock frequencies (reported through wattman iirc) on the 5700xt. ASUS Radeon RX 5700 XT: Overclocking. This chart compares the AMD Radeon RX 5700 XT 50th Anniversary with the most popular Graphics Cards over the last 30 days. 15 Jul 2019 at 16:54 #139. This should be practically automated... Who in their right mind though it was a good idea not to give board partners working AGESA until LAUNCH DAY!?! If you want to go fancy you can even download the 50th Anniversary Edition VBIOS. BTR purchased a $449 RTX 5700 XT Anniversary Edition directly from AMD.com on its launch day. Still very good perfprmance pr watt.