I got to 1400
ELO once, I did it with a deck that was, at the time, one of the the best
ELO decks at the time and I spent the time to learn how to really play my deck and learn common moves. It was actually pretty easy, till I got to +1400
Anyways;
Learn a mojority of the plays in the game mode. Makes it easy to know how to pill.
Get a deck that is not only top tier but also a deck that you KNOW how to play.
I never really cared about the time of day...
I like damage :3
Different
ELO levels play much differently than others, if that's what you mean.
I play sum Creedance Clearwater Revival and
Chill out for second or two. Does the trick 98.6% of the time.