Some EDH decks just want to ramp into Kozilek, cast it, draw cards, and sometimes even attack and decimate a board
The deck is heavily creature-focused hence the high amount of them, with the rest of the cards either ramp, removal, or Dragon support cards
These cards had a gimmick whereby they could be scanned with the Nintendo e-Reader to unlock special mini-games and other exclusive information
If a "Dark World" monster(s) you control would be destroyed by battle or an opponent's card effect, you can banish this card from your GY instead
(2025-09-19) A modal double-faced card can be transformed or be put onto the battlefield transformed
But unless you delve a little deeper into the rules, sometimes the details of how these work are completely lost on you