If you dont, you are basically sacrificing your own creatures for a trade-off or, well, you are not killing anything
While Karn and Narset ended up restricted in Vintage and Teferi banned from several formats, it was the tantalizing trickster who wound up banned in Standard, Pioneer, Modern, Historic, and Legacy
The thing is that in Eternal formats where this card is legal, cheap 1-mana spells and fetch lands are among the most popular strategies, and the static effect on this card prevents those from hitting the graveyard
And if you pay 5, which is tough at sorcery speed, you can tutor and then draw the card plus two more
Someone bought some foil dark rituals off ebay and took some higher res pictures of them when they noticed something was off (the picture below shows the fake on the left and a real one on the right)
Best Food Payoffs Cauldron Familiar is the first food payoff that comes to mind, as it has long been a stapleif not the staplefor food strategies