Death and Taxes, Azorius Control, and Stoneblade variants should all be looking to find a spot for Solitude in their lists, as it can dismantle some powerful starts out of Prowess, Zoo, and Deaths Shadow
Aethergeode Miner: For two Energy, you can keep it safe after a board wipe attempt, or even a target destruction attempt, which does make up for the low toughness
Avatar: The Last Airbender Rare Lands The rare lands from Avatar: The Last Airbender are nearly worth spells on their own and have almost no drawback as mono-color lands
If you're curious about what those archetypes are, you can find them all here alongside some key cards to look out for
I feel like all it needs to explode in popularity is one showing on a gameplay show like Game Knights or Shuffle Up and Play, and itll be revealed just how busted this card actually is