Remove five quest counters from this enchantment and sacrifice it: Search your library for an Equipment card, put it onto the battlefield, attach it to a creature you control, then shuffle
It also gives me a mental boost when I can look at a list of my opponent's cards and quickly identify which ones would be problematic so I can play around them
Then theres Fractured Sanity, a three-mana Blue sorcery that has each opponent mill 14 cards (discarding from their deck to their graveyard), but can also be cycled to draw a card and make opponents mill four cards instead
As a commander, Kruphix often piles on heaps of mana to fuel an explosive Blue Suns Zenith or a game-winning Helix Pinnacle, so it would be best to watch out for those kinds of decks
While this can be rather distracting at times, ultimately these collectible cards are optional