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Virtue of Knowledge Panharmonincon-like ETB effects are becoming increasingly popular and widely printed in MTG, and Virtue of Knowledge brings this powerful ability to blue
Easily paired with Pocahontas - Following the Wind, also featured in Winterspell, this puts you on a one way train to locking down the board for a full turn and completely shutting off your opponent's ability to challenge
And you can bring in all the old Amass cards from War of the Spark, too
It basically lets your draw two cards every turn instead of one a crazy tempo advantage