There are several modes in MTG Arena and only the ones that have the word "Ranked" are eligible for earning you rank progress
Phasing is probably the most foolproof way to make sure that nothing bad happens to your creatures, because not every board wipe merely destroys creatures these days
Some permanents have activated abilities that help you to draw cards (Shorikai, Genesis Engine, Dimir Guildmage)
Mmmenon, the Right Hand Fair Urza, Lord High Artificer is how Im reading Mm'menon, the Right Hand
One trick I use is to then sort by EDHREC Rank, which will then have the cards that are more popular in Commander bubble up to the top of the list, though you might run across some hidden gems if you keep scrolling down
$254.99 Save $27.79 Perfect Order has been one of the more affordable Pokmon TCG expansions to come out recently, but we still love deals