Youll want a Catalyst Stone to make your flashback costs cheaper, and then youll want Pyromancers Goggles to doubly copy all the red ones, which you might get to cast off the top of your library since youre still using Elsha of the Infinite, plus adding Melek, Izzet Paragon
You need some big payoff card for being mono-color, a big tempo payoff for having untapped perfect mana, or you need the mana in the format to be unreliable for two-color decks
The most expensive is the Battle for Zendikar Expedition, followed by the Zendikar Rising set
Back in June, for instance, youd have to spend at least $1,100 per box, which was already obscene
To play up that these are a bunch of old mechanics, we chose to put these two cards, and only these two cards, in old, original card frames