Now, most of you have probably taken a peek at TCGplayers (or another similar stores) grading guide at some point in the past, so were going to skip past the initial paragraphs and check out the relevant one
The power level of these cards simply dont measure up to the blue ones, so these cards will benefit more in a game of EDH then a game of 1v1
(Quick little factoid: Urza's head is one of only a small handful of characters to show up in three different Un- sets.) Urza then showed up as a legendary creature called Urza, Lord High Artificer in Modern Horizons (this portrayed him prior to his spark igniting)
Beyond just being powerful on its own, Insight Engine also works wonders with any Proliferate or counter-doubling effect
Match perfectly to make double-sleeving fast and easy
Because the "search" requires you to find a card with certain characteristics, you don't have to find the card if you don't want to