In general terms, companions encourage creative deckbuilding and reinforce the idea that self-imposed restrictions can be fun and novel
Resist: Reduce any damage dealt to the card by the number printed on the card
I think the real home for this will be in decks that care about both having counters as well as artifacts in play, like Anim Pakal, Thousandth Moon
With Ayula, Queen Among Bears as his commander, the deck required a high density of bear creatures to function
How does it work, and are there any hidden threshold gems you could toss into your increasingly graveyard-centric Commander decks
While is a steep cost to pay for this, this card is still a potent piece in Commander, especially if you can cast it for with a Rooftop Storm on the battlefield