Since goad is intended for multiplayer formats like Commander, it has only been printed on a relatively small number of cards
Keywords: At the top of Bone Dragon's text box, we find it has the keyword 'flying', which gives it a special rule (it can only be blocked by other flying critters)
On some cards, such as the Werewolves, you could also transform back
Sorcery Common Irina Nordsol null/null NOT LEGAL Standard NOT LEGAL Future NOT LEGAL Historic NOT LEGAL Timeless NOT LEGAL Gladiator NOT LEGAL Pioneer NOT LEGAL Explorer LEGAL Modern LEGAL Legacy LEGAL Pauper LEGAL Vintage NOT LEGAL Penny LEGAL Commander LEGAL Oathbreaker NOT LEGAL Standardbrawl NOT LEGAL Brawl NOT LEGAL Alchemy LEGAL Pauper Commander LEGAL Duel NOT LEGAL Oldschool NOT LEGAL Premodern LEGAL Predh Search your library for a Plains, Island, Swamp, or Mountain card, put it onto the battlefield tapped, then shuffle.
What I'm trying to say is that that's basically what the Planeswalker cards already are , according to the lore
Changed Gruz Mother