Data Brain

-Equip only to "Psychic Armor Head". If the equipped monster is destroyed by the effect of an opponent's Spell Card, during your next turn, you can activate this card from your Graveyard by copying the effect text of that Spell Card. If this card is activated this way, destroy it during the End Phase of this turn.

I don't know if this is because it has such a blank effect; I mean, all it does is copy the effect of a spell that destroyed Psychic Armor Head during your next turn.

But still, it is the only card I have not seen in the search bar.

Please add, unless you had a good reason not to.
Michael Lawrence Dee
The reason is simple: difficulty. I actually have a prototype but never finished it due to issues that it don't work properly. I can actually work on this on another time, and if I make it work, I'll add it in.
Now this is how I play: