There are better options, like the creatures that come in as a 2/2 with islandwalk as a static ability for the same mana cost
The double Catalog offers plenty of card selection and gets cards into the graveyard to shuffle away, and the burst of mana attached to the shuffle gives you the resources to use all those cards you saw
But that is not a combo, Id say
This card is sure to be impactful in almost every Commander game, but it feels like it will be a major headache for decks helmed by commanders like Aesi, Tyrant of Gyre Strait that draw and extra cards every turn
Cruel Fate, Sealed Fate, and Second Sight can do this effect without messing up your own future draws
Customizing Card Conjurer If you havent looked at it, I highly recommend trying out