Eiganjo Castle Most white commanders could justify Eiganjo Castle given that they always have at least one target, and a mild protection spell that slots into the land base is pretty decent value
Japanese Pokmon cards use distinct rarity symbols compared to their English counterparts, and counterfeiters often exploit this difference to pass off fake cards as genuine
Use Attunement to fill the graveyard with enchantments, bring them all back into play with one fell swoop using Replenish, and have one of them be Opalescence so you can attack for twenty the following turn
However, since effect damage is reduced to 0 by traps like 'Frenzy' or 'Domain' or by 'Kentregina' copying effects, it becomes a battle of whether you can beat them down while they stall for turns
It was perfectly logical for two reasons: 1) starting with the first of the weakest Numbers (Leviathan Dragon) alongside introducing Xyz Monsters as a whole would've made the latter group seem useless by comparison, especially with all of the more-miss-than-hit effects of Xyz Monsters before they became more practical
Thats a lot of mana