Luck is a factor in life. Some people win lotteries, some are born in rich families. Some are poor from the very start and have it uphill for an entire life. Some people are beautiful doing nothing, some are born ugly.
In other words comparing yourself to the people with luck is the best step to constant frustration and depression.
You need some extreme luck to get DQ Alex and some more to use it in Arena.
Even though it generally sucks for people, who don't have much luck, accept the fact that extreme luck is gonna reward the one who gets it and move on.
Twice I've picked DQA in Arena and quite early too and I said to myself never again. Trying to keep the deck 'pure Highlander' forced me in multiple occasions to make sub-optimal picks later in the draft. It was fun when I got to drop it in a couple of games, but given how limited card draw you normally have in Arena most of the times she was just burried in my deck and I was stuck with my mediocre minions