Blue's strengths are drawing cards, taking control of opponents' cards, countering (negating opponents' spells), and flying creatures or creatures that cannot be blocked
Maybe for some reason you just are not in the mood to win and choose not to
For this reason, I personally prefer only the 2 Sulfefnirs over the standard 3 copies
Assuming that you have sufficient artifacts in your deck to reliably have metalcraft (I like to aim for thirteen for something like this that needs metalcraft late game), then Concussive Bolt is a win condition that I can get pretty excited about
Words Of Power Odric, Lunarch Marshal shares the love whenever a creature has any of his listed keyword abilities
Use the power boost on turns where you'd otherwise lose a key piece, not as routine defense on every attack