It's a little bit of a stretch thinking of it as destruction, but there are times that blue's only way to deal with a threat is by having the same threat itself
Just add a white creature with a good enters ability, and you have an engine
These abilities are just here to smooth out the set and give some extra synergy for cards that like it when you discard cards and the team made entirely of robots respectively
Whether those elves are giving you Ezuri, Claw of Progress experience or theyre your team to attack with Jetmir, Nexus of Revels, an instant-speed token army is always awesome
The third factor is the expected value
This card is often played in defensive "Stax" decks with blue and white mana, whose goal is to stop anything from ever happening, and that's aggravating to deal with