Its domain ability controls its power and toughness, which to me makes more sense if youre going to throw this into a 5-color deck rather than a dedicated Gruul one
Not only are you triggering your lifegain synergies, but drawing when you gain 3 is easy to trigger with Food tokens or by attacking with an okay-sized lifelink creature
And if you want to add this card to your Lathril, Blade of the Elves deck, its going to proliferate quite a lot of -1/-1 counters
This deck relies on the strength of various Stage 2 attackers, with Machamp covering Gengar's ineffectiveness against Pokmon SP
Its weak on its own when it comes to Constructed, but it has a spot in white lifegain decks
The same millennials who collected those cards as kids but didnt hold on to them are now adults with jobs and money to spend, and since social activities, travel, and big-ticket expenses have been largely on pause, it makes sense that some people would invest those excess funds into collectible cardboard