otherwise Ill be the dead one once Im finished listing all the possible Rooftop Storm combos
Catch you round, from your friendly neighborhood well-read minotaur
2020-06-01 If you reveal a companion outside the game, for as long as it remains there, you may pay any time you could cast a sorcery (that is, you have priority during your main phase and the stack is empty)
So this is clearly designed for one deck archetype, Life Gain, which is the third biggest archetype ever played, and it makes sense in +1/+1 counter decks that have the occasional lifelink dork or Commander or something that gains you life here and there like Akoum Refuge, and then if you have a Selesnya colored power matters build this would help there with things like Anthem effects
This is one of the most generically open-ended partners for Commander, and its a huge red flag (green flag?) if you see it in an opposing command zone