And then, let your children color the Pokemon
Or have the ability to accumulate counters over time
Given the low opportunity cost of adding a land to your deck, you can safely play this in any deck with a commander that shares a type with their abilities, and of course typal decks
Click here to see Mirror Room // Fractured Realm 0067_MTGDSK_Main: Mirror Room0337_MTGDSK_BdrlsRm: Mirror Room Note that Mirror Room has a triggered ability, so if you unlock Fractured Realm first, you'll get to do the effect of Mirror Room twice, and you can choose two different targets if you desire
The Commander: Niv-Mizzet, Visionary Niv-Mizzet, Visionary justifies all that burn with its exceptionally powerful card draw ability
That said, Possibility Storm was mostly unplayable from a competitive perspective because the deck-building cost was too high, until the right support mechanic (adventure sorceries) came along and made it into the centerpiece of a legitimate deck, so it might just be a matter of time until something breaks Unpredictable Cyclone as well