Oftentimes you could win games my casting the card on your own creature, because youd gain the life & survive another turn
In Swiss, you get to play lots of games
Lutri, the Spellchaser was controversially (and correctly, in my opinion) banned from Commander on release as itd otherwise be an auto-include in any deck playing blue and red (almost any Commander deck fulfills the companion restriction, as this was clearly not designed for Commander)
In sideboarding, continue to pay close attention to your creature count, your mana curve, and the other important details of your deck's composition
The top four eight (previously announced as 4, now officially 8 as was announced in the Lorecast, possibly more) players from each regional Challenge will earn the qualification for final North American or European Championships events