You wont necessarily need four copies of each, though you might, especially for the bonus sheet lands that see a lot of play in Vintage and Legacy
Previewed characters like Celes and Terra from Final Fantasy 6 have me excited to see how other characters from early games are depicted
Cards in graveyards get covered up and forgotten about
You can pay seven mana to meld him with The Mightstone and Weakstone to create Urza, Planeswalker, who has a whopping five different abilities you can use - and you can choose to activate two abilities per turn instead of just one
You describe what you want in plain English, and it controls a real browser to do it navigating pages, reading content, clicking buttons, and sending you notifications
In constructed formats, cards that make a token each turn tend to be strong, and even though the tokens from Skrelv's Hive can't block, the toxic ability often makes them need to be blocked