I want to build a solid UR list, but I'm quite out of ideas.
I'm here for some brainstorming *_*

something we surely agree on:

20-22 lands

4 Lightning Bolt
4 Fire//Ice
4 Electrolyze
4 Brainstorm
x Pyroclasm or Rolling Earthquake or Earthquake

now:
counter/cantrip list?
Counter Top, suitable here?
Gelectrode, hot or not?

pretty hard to make a good list with these colors but I'd really like to do it