There are some very relevant cards which dodge IoK like Yawgmoth, Thran Physician, Goblin Charbelcher, Omnath, Locus of Creation, Primeval Titan or any of the new Elementals, but just looking at the list of most played cards in Modern shows how many other cards Inquisition of Kozilek hits
Now we have scry lands (Temples), cycling fetchable duals and other utility lands for days and you rarely see these used
(You expend 4 as you spend your fourth total mana to cast spells during a turn.) Whenever you expend 8, exile the top two cards of your library
The attack trigger is an enabler that makes it a total package
Token copies still have a mana cost, so a curve like Woe Strider into Nightmare Shepherd into Gary drains for 10 immediately, and the 4/4 flyer could help finish the game off
One example is the fact that any time you buy a pack of cards, which generally only costs a few dollars, youre essentially entering a lottery where you might have a pack that has a rare card worth many multiples of what the pack cost