This is a five-mana white enchantment that reads: If one or more creature tokens would be created under your control, that many 4/4 white Angel creature tokens with Flying and Vigilance are created instead. Basically, if you were going to make a 1/1 Goblin token, for example, you would instead make a 4/4 angel with Flying and Vigilance
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
Format Matters More Than Power Level A lot of the best white cards in MTG are incredible in Commander but feel clunky elsewhere
For starters, restrictions on tutors are no longer present in any bracket
Multi-type cards are a major boon here, when applicable