Crucible of Worlds is less appealing in a Standard environment when they can simply kill you on turn four or five
Aggressive decks with multiple one drops or Control decks with a couple of Wrath effects or Planeswalkers are exclusive to Cube drafts
Like most Magic: The Gathering cards, the value of Friarball depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Mystery Booster 2)
Even if you just draw three cards it is a slightly more expensive Harmonize, another popular green draw spell
Sideboard-wise, Survival is capable of packing in a few more silver bullet style cards (usually in the form of cards like Containment Priest to shut down Dredge strategies) as well as hate cards for Shops/Outcome in the forms of additional Manglehorn and even Energy Flux or Kataki, War's Wage
However, this is not the end for Kroxa