4 Dragon monsters (1 Fusion, 1 Synchro, 1 Xyz, and 1 Pendulum) (This card is always treated as "Supreme King Z-ARC".) This face-down card in the Extra Deck must first be either Fusion Summoned, or Special Summoned by Tributing 1 Level 12 DARK "Supreme King Z-ARC"
This means your opponents cant use conventional cards like Counterspell to stop a land from entering the battlefield and triggering a landfall keyword
TCG sets, spell cards were known as magic cards, with some speculating a change to avoid potential legal troubles from Wizards of the Coasts Magic: The Gathering
It is much bigger than a normal card
Your creature might not even survive
Yes, it requires you to sac two untapped lands, but it also comes in untapped, so you get to use it right away