Its a perfect example of early Magic design what we would later label a top-down approach which tries to match the lore as literally and intuitively as possible, even if it makes cards harder to understand at first glance
This might be one of the worst showings from a single Commander deck since the 2013 set
Players may Pendulum Summon once per turn, Special Summoning any monsters from their hand, and face-up Pendulum Monsters from their Extra Deck, whose Levels lie between the two Pendulum Scale values (exclusive)
Its ability to put itself on the board in response to another Fire King's destruction lets it open up Rank 4 Xyz plays, including Brotherhood of the Fire Fist - Tiger King
Many of them are from the Fallout precon, such as Craig Boone, Novac Guard, which is also an underrated commander, Duchess, Wayward Tavernkeep, Overseer of Vault 76, Sierra, Nukas Biggest Fan and ED-E, Lonesome Eyebot
You can play them out of the box and have a good time, but they also clearly reward tuning and refinement