The combination of seeing five cards and drawing two is surprisingly potent, especially in formats that have good ramp (Sol Ring, Ancient Tomb) and where the power level between cards varies greatly (singleton formats, Vintage)
With a reliable reanimation method, you can quickly start picking off any card giving you trouble
Moreover, whenever a new Lightning-type Pokmon gets released in the years to come, well have to consider whether it could be good combined with Electric Generator Thats why I believe that, between Miraidon ex and Electric Generator, the latter is the better of the two, and why I rank it higher
Packs with multiple rare cards do come up, but for the drop rate, take this update from Mark Rosewater
The sub-$75 raw card is where most collectors bleed money
Omarthis, Ghostfire Initiate Omarthis, Ghostfire Initiate gets better if youre playing colorless creatures