Stitch brings friends and this draw power is excellent, especially when combined with the high cost to remove it
While most decks won't have tons of MTG Vehicles, getting to draw from both MTG equipment and auras is sweet indeed, making Sram a very good inclusion in most Voltron decks
Quality, readability, and thoughtful restraint still matter far more than pure shock value
Tajic is an incredibly good card, but it looks like some of the decks at the top of the expected week one metagame are built to deal with it efficiently
Even if you play it against midrange and control decks, you will be able to mill tons of their lands, and at times even all of them, before they can do anything significant
In either case, you will never regret paying 4 mana for her