Its abilities are: Artifacts you control are Foods in addition to their other types (also gaining the Food Token ability)
This was shared by Irsaan on r/MagicTCG, who also shared images of the other Bonus Cards well be covering
I want to stress this is not a common scenario, so you shouldn't just start jamming an extra card into every deck to ensure you don't run out of cards
Now, around 2 years later, the hobby of collecting Pokmon is bigger than ever
BW4 Dark Rush (Dark Explorers in English) is the only exception for the BW and XY era, which is only available in 1st edition without unlimited edition print run a.f.a.i.k
Id want to add Basking Broodscale, Scurry Oak, and Herd Baloth in the deck since they provide tokens to sacrifice for Felothars ability