Prevent all effects of attacks used by your opponent's Pokmon done to the Pokmon this card is attached to
Which is probably its entire planned business model, come to think.
For a measly one blue mana, you get to dip into your deck and pull out any sorcery ready to go off the top of your deck
But there are lots of different ways you could build an artifact deck, and artifact decks can be found in a huge number of colours
Sure, its more of a milestone for Limited and Pauper, but Inspiring Overseer is also sweet for angel and cleric tribal in Commander
This is also the best possible result, as the audience will regard it as a Moment of Awesome and even give the Pokmon who were in it a special "star" status, with its own animation