King Suleiman ($161) King Suleiman was probably quite good when it was first printed, and djinn/efreets were more common to see, but these days its just pure nostalgia (and Reserved List, obviously!)
Removal capabilities after playing "OP02-121 Kuzan" will put on further pressure, and then "ST08-005 Shanks" can be played to KO all opponent Characters with costs of 6 or lower.
There are a bunch of different ways to abuse the card alongside Landfall triggers and sacrifice outlets, so it makes for a reliable alternate win condition in decks like Aristocrats
This lays the groundwork for future equipment and enchantment cards attached to it
Despite being almost a decade old, Crystal Wing Synchro Dragon is still occasionally played in competitive decks to this day
Pick up a pair of new WATER Xyz Monsters that let you set up a powerful Rank-Up combination that can Summon the "Number C" monsters from 101 to 107 with their effects active