Ichor Elixir is a fairly efficient mana rock that gives you a better chance of getting what you want when you roll the planar die
The American equivalent usually is Slightly Played or Lightly Played (not to be confused with the European Light Played)
Building up energy on the bench and then using this supporter card will be beneficial to instantly have this powerful attack back at the user's disposal
Yes, 6 mana is a pretty big ask for Busts effect when compared to cards like Armageddon, but having the option to destroy your opponents most troublesome land for 2 mana as an additional mode for this card isnt nothing, as there are many powerful nonbasic lands roaming Commander tables like Gaeas Cradle, Serras Sanctum, and Academy Ruins
The best you can trade right now are the 1-star cards, or what the real-world sets would call Illustration Rares
You choose a noncreature card from it