Blue normally doesnt deal in first strike at all, so why not just remove all the power of attacking creatures by playing Meishin, the Mind Cage
Choose any number of target opponents
A monster card is color-coded YELLOW Types of Monster Cards: Dragon, Spellcaster, Zombie, Warrior, Beast-Warrior, Beast, Winged Beast, Fiend, Fairy, Insect, Dinosaur, Reptile, Fish, Sea Serpent, Machine, Thunder, Aqua, Pyro, Rock and Plant Attributes of Monster Cards: Earth, Water, Fire, Wind, Light and Dark Gameplay rules for NORMAL MONSTER CARDS Normal Monster Cards are used primarily to Attack or Defend, although they can also be used as Tributes, to pay a cost, or as part of a Fusion
The pool of such commanders is deep, with great options in every color combination: consider Sai, Master Thopterist, Darien, King of Kjeldor, The Mycotyrant, Prossh, Skyraider of Kher, and Akim, the Soaring Wind
Before resolving a card or effect that would destroy this card, you can Tribute 1 "Chitiknight" monster you control