These lands count as both basic land types, so you can fetch them with any relevant fetch land, and they enter the battlefield untapped without any drawback
Death Cloud lets you channel all your mana towards devastating effect
Unfortunately, the mechanic doesn't really work as intended in Commander, since there are no sideboards
Panorama tends to mean horizontally connected, yet these are in all directions, having many folds, from the direct translation
It is even harder to do this before your opponent has reduced their hand size to below three
The strategy is to play cheap, evasive creatures on turn one, use them to get Yuriko into play on turn two, and then use cards like Brainstorm or Senseis Divining Top to manipulate the top of your library, ensuring you reveal a high-cost card like Draco (16 mana) or Blinkmoth Infusion (14 mana) to deal massive damage to the entire table at once.