Play with moon eater will work out great!

I would like to have a consistent stat rather than it switching. Why? Because if I wanted a 2/4 and its turn 2 I’m hooped on turn 3 because in all fairness a 4/2 isn’t too great. Lifesteal is a nice touch.

I really want to see an echo card with a decent battlecry

Echo cards can be played multiple times on the turn you play them. Each time, it’ll add a ghostly copy of the card back to your hand that disappears at the end of your turn. -(https://playhearthstone.com/en-us/expansions-adventures/the-witchwood/)
Note: It says each time you play this card add a copy of the card back to your hand so ya I would think so