As with any editioned, syndicated, printed, versioned anything (from art to cards to bags) firsts are important because they lay the groundwork for a series, a character, an athletes career, a superheros arc, etc
That is until it got very out of control
Special Summon up to 2 of your banished monsters with different names, from among "X-Head Cannon", "Y-Dragon Head", and "Z-Metal Tank"
It wasnt until a Secret Lair reprint only a month ago did we get a new interpretation of Memnarch (albeit in Wild West sheriff garb) that shows off exactly where the up here is when he says my eyes are up here. At least no one mistook him for a bird I guess
Computers cant actually create true randomness
Ureni also acts as the win condition, though its worth considering land-based win conditions like Dark Depths + Thespian's Stage and Field of the Dead to enhance it