While temporary removal seems like a pretty big drawback when compared to board wipes that destroy or exile cards, there are a few pretty handy upsides to bouncing permanents back to your opponents hand instead of destroying them
Some people say it's Ulalek, Fused AtrocityUlalek, Fused Atrocity, and some people say it's Azlask, the Swelling ScourgeAzlask, the Swelling Scourge
Creature White has plenty of creatures to cast from exile ranging from one to four mana
Finally, the card draw and reanimation effects are inefficiently costed, even at instant speed, but that makes them far from irrelevant
Then, for just 1 red mana and an artifact you're willing to sacrifice, it brings back artifacts with a mana value of 3 or less