If your deck plays to the board, this blue instant functions as a combat trick by producing a surprise blocker
Sure, its a way to fog combat damage, but Im sure thats the tamest thing you can possibly do with this nightmare angel
The card costs one colourless, one blue and one red mana, with stats of 2/2
Invasion of New Phyrexia / Teferi Akosa of Zhalfir Here we have an interesting case
Ice Magic Every set typically has some number of a series of Blue cards: one cheap card that bounces a creature, one medium cost card that can put a creature on top of the library, and one expensive card that gets rid of the creature altogether in a very Blue way
Its also cool with Mindcrank and Syr Konrad, the Grim since the damage keeps your opponent milling more cards