So here's a quick list for you: 5 Blue EDH Hidden Gems Under $5
It doesn't matter whether your deck can win on turn 1 or 2, it doesn't matter that it can go Mishra's Workshop into Trinisphere turn 1, what really matters is what it can do consistently
Even if you dont put all of these cards into one deck, they are all fantastic additions to your collection
You now have enough mana to repeat the process, making another two goblins with Pashalik Mons' ability, making mana with Mana Echoes, sacrificing one to Skirk Prospector, activating Pashalik Mons, and so on and so forth until your opponents are all dead
I cant think of a current interaction that breaks Kurkesh, though unique combo cards like this are among the most enticing spec opportunities because they can be broken at any point