So why use Millennium Eyes Restrict
There's the opening, in which Zanarkand is attacked by Sin, the intimate moment between Yuna and Tidus, or the chaotic raid on Bevelle to stop Seymour's wedding
If you Special Summon this card with this effect, this card is removed from play when it is removed from the field
Whether he was pitching and casting things like Arrogant Wurms and Basking Rootwalla, protecting himself from removal by making himself black, or pumping himself by throwing cards like Deep Analysis in the graveyard, only to be cast later
Those last two have the added benefit of giving you a card right away, which helps immensely
This resulted in a Limited environment that doesn't have the depth that more enfranchised drafters are used to