During the end step, you can't perform actions at sorcery speed like playing a land, casting a sorcery, or casting non-flash creatures (unless there's some effect in play, like Teferi, Mage of Zhalfir, that gives some of your cards flash)
No maximum hand size, free Clues every upkeep, and a body that grows whenever you draw your second card in a turn makes it a steady source of value
#6 If turn one 260 is considered alright, what the heck is considered ridiculous
Ultra-Premium Collections ($119.99/119.99) While not as popular as booster boxes, Ultra-Premium Collections give you a bunch of packs (typically from a variety of different sets), as well as exclusive promos, playmats, and other neat goodies
Niv-Mizzet, Parun enables access to plenty of great storm cards, while also being a very powerful engine piece by itself