Neither compare at all well to Impulse but both are still very playable
The most common use of the hypergeometric calculator will be to check opening hand math, but you can also use it to check what it will take to be able to cast a WWW spell on turn three or what the odds are of having drawn X number of lands by turn Y
Theres a potential damage amplifier in Spiked Corridor // Torture Pit and a mana doubler in Barbflare Gremlin, but those arent super unique effects anymore
Artworks and Cards of Secret Lair Compost Griselbrand Elvish Spirit Guide Eidolon of the Great Revel Kira, Great Glass-Spinner Hokori, Dust Drinker Angrath, the Flame-Chained Tamiyo, the Moon Sage Ashiok, Dream Render Sorin, Grim Nemesis Ajani, Mentor of Heroes Hall of the Bandit Lord Boseiju, Who Shelters All Freed from the Real Ghostly Prison E
When you have a mana sink in play, you might still prefer to draw more spells, but when you inevitably start drawing more lands than you need, at least you can put them to some use
With our impending return to Kamigawa this winter, the time is right for the most iconic card from original Kamigawa block to make its way into Modern