Negating the effects and attack of a high-cost character for a turn all but ensures that your opponent will struggle to deal with this 12000 power [Blocker]
You can use them as they are right out of the box or give them some touchups and a fresh coat of paint with your favorite color scheme
In addition to these abilities, the card can also be Cycled to draw cards, allowing them to enter the graveyard and then buff your other Artificers (many of which are likely to be Cids, if youre playing your cards right)
A standard penny sleeve adds a bit of thickness, and if you're double-sleeving (which I sometimes do for my more valuable cards like a shiny Skarmory or a full-art Hassel), the count will drop significantly
Furthermore, this Item card makes Professors Research more effective, as it will become more likely to draw the Stage 1, Stage 2, and Trainer cards the player needs