There's quite a few abilities, so I'd recommend taking a look at the card itself, because you probably forgot at least one of its abilities like the ability to deal damage to a planeswalker when it deals combat damage to a player so be sure to keep a copy handy just in case
I have quite a few shiny ones or holographic ones as you call them I think
they host tournaments, stock up on new cards and teach new wizards how to play
Of course, a more specialized tutor, such as the aforementioned transmute cards, could put the card in hand rather than on top of the deck at the cost of more mana, but with all of the best tutors and cantrips already taken, whatever goes in its place is likely to be underwhelming
One of Graydle's main tactics is to seize control while destroying the opponent's field while dividing it with Graydle Impact