This card basically exists as the "big red
button" for blink decks or other constructions
that exploit comes-into-play abilities. It's
somewhat overkill - creatures that trigger
something when they enter play are generally
more than enough card advantage on their own -
but it can also be useful in long games or in
settings with lots of opponents to keep up with.
It's also easy to get so caught up in those
spectacular plays that you forget it can do much
more vanilla work like get your creatures out of
the way of Wrath of God or out from under
Pacifism.