I also had the bad fortune of losing my creatures fairly regularly, but that helped me get through the mid game and not be a problem that had to be dealt with
It also doesnt feel as bad getting smacked with this big Jeskai commander when you know it wasnt really the players choice to hit you
I would rather helm a deck with Jodah, Archmage Eternal where possibilities are endless over Jhoira, Weatherlight Captain, who feels too linear and consistent
Mana support in the midgame needs to be stellar to be worth it, and Arbor Adherent fits the bill
Use Item Ability: If you have item cards in play (items are like equipment or artifacts that stay in play), you can use any abilities they have, according to their text (some might require exerting the item)
What set is Exterminatus from