Professional grading can authenticate your cards, encapsulate them for preservation and provide an objective condition assessment that influences market value
Crypt Ghast Most perks Ive listed about Nirkana Revenant, Magus of the Coffers, and Bubbling Muck apply to Crypt Ghast as well, so rather than extoll the virtues of Urborg, Tomb of Yawgmoth and X spells for the 4th time, Ill instead start by saying 4 is a very reasonable mana cost for a one-sided mana doubler before moving on to the other half of Crypt Ghasts text box
The Ishihara card features Tsunekazu Ishihara with both a Master Ball and a Rotom, and has a rather hilarious attack that makes you flip 60 coins good luck getting your opponent to let you resolve that
No muss, no fuss just an all-around great aggro tool
Its like taking a huge scoop out of their deck and saying, You won't be needing these. Talk about a hunger that just can't be satisfied