It's cheap and splashable so it can easily slot into any Blue deck, but being an enchantment makes it particularly juicy in Enchantress decks like Zur the Enchanter and Tuvasa the Sunlit, and in Blind Seer decks which run cards like Glamerdye so you can change Insight to trigger off whatever the most popular color is that your opponents are running
Its all about value, drawing cards, setting up powerful synergies, and using your tech upgrades to take over the board
Multi-type cards are a major boon here, when applicable
Additionally, with this out for a few turns, you get more turns to draw Traps so when they finally remove Ashiok and crack their fetch, you are ready to cast your Archive Traps
Format Matters More Than Power Level A lot of the best white cards in MTG are incredible in Commander but feel clunky elsewhere