If youre running a lot of enters-the-battlefield effects, Cloudstone Curio and Crystal Shard are both strong options
In retrospect, I probably should have just done that with a spreadsheet, since search was slow enough to be annoying especially when I was trying to actually put together the decks
Add it all together, and it's Into The Pit we go
Whenever you cast a historic spell, put a +1/+1 counter on Elena
Arena doesnt currently have the ability to play multiplayer Magic , so if youre a fan of the Commander format, you cant do that now on Arena (Ill get more into the various Magic formats that are available to play later on)
There is quite literarily no logical reason whatsoever not to always be playing ranked and strictly speaking you are far more likely to meet opponents of your skill level in ranked play, then playing in non-ranked play where you are just matched up with whoever is available as opposed to someone in your current rank