Im thinking Unesh, Criosphinx Sovereign, but that deck doesnt need much help with card advantage
Decks most interested in this card are aggressive red decks and protect the queen type strategies like Delver or Deaths Shadow
2 Stormsplitter Flavorful, Fun And Powerful Red Mythic Otter Another mythic from Bloomburrow, this card is an extremely flavorful and fascinating Otter with haste and a 1/4 body for four mana
Whether you're collecting or powering up your deck, these spells have the precious Energon that bots crave
Toss in some Commander play (where the enchantment greatly improves any budget manabase full of tapped lands) and potential in the Gates decks in Pioneer, it's looking like Spelunking will be the chase uncommon of the set
This has lately been the industry standard, even though Cryptic Command is incredibly powerful and important for Azoriuss gameplan