Unlike paying for your spell with an installment plan, a big X spell can easily tap you out, and if you do that at the wrong time it can give your opponent the opportunity they need to take over the game
It's the fifth most valuable base version of a card in the set at this stage, with presales going for around $10
If there is a copyright of 95,96,98,99 at the bottom of your card and there is no shadow at the edge of the picture, then you have a rare shadowless card
However, upon being equipped to a creature using its three-mana reconfigure cost, in addition to being able to look at the top of one's library, The Reality Chip's controller is able to play lands and spells from atop their library, potentially allowing that player to reliably chain several spells together in a turn, regardless of if they have cards in their hand