Two mana to kill a creature is a common effect and even though blue-white shouldnt typically get this effect, that doesnt change the fact that it is a balanced card
It can never be the only removal spell in your white deck, but a few copies handle cheap threats to save that Get Lost for meatier problems
In the intervening time you also have a 5/5 vigilance which is a pretty impressive body
However, if you dont, theres nothing wrong with copying a popular list online or buying a preconstructed deck designed for the format
Finally there's Erestor of the Council which is one of only two voting payoff cards in the entire deck, and the payoff here is very good: every time you vote you are guaranteed to draw a card, and then on top of that you can bribe opponents to vote your way with treasures or scry when they don't vote your way
Strands of Night This was actually the card that got me wanting to write this article in the first place