While you will need real, authentic Magic cards for tournament play, anything goes for kitchen table and casual play
Fabled Passage Description : Fabled Passage is one of my favourite choices allowing you to tap and sacrifice it, search your library for a basic land , put it onto the battlefield tapped, the shuffle your library
Since Selvala, Heart of the Wilds exists, I wouldnt recommend using this cat shaman as your green commander, but I absolutely think this could go in the 99 of any deck thats running a lot of expensive stompy creatures
It's just awesome
25-21) Doubling Season ($25), Woodfall Primus ($10), Mana Reflection ($10), Genesis ($15), Regal Force ($8) Im lumping these cards together because they often end up in the same kinds of Commander decks: big, green, angry brews that overwhelm opponents with mana ramp, tokens, fat, and utility