>>47229859They would have to make it a one of a kind mon with a convoluted ritual to get it ala Spiritomb. It could be a Mythical, Legendary, or just a very rare and unique Pokemon that Form changes like Rotom. They can use pic related in
>>47230698 for the different forms.
>PhantomThe main form. Pure Ghost Type with stats similar to Spiritomb and an ability in Pressure.
>Aerodactyl FormGhost/Flying type. Alternate form that's geared towards offense with high speed and attack, but low defenses. Just picture Mega Aerodactyl's stats.
>Kabutops FormGhost/Water Alternate form that's geared towards defense with high defenses and HP but low offenses. Picture an odd middle ground between Shuckle and Jellicient.
I don't know how they would do the blocky form though, but this would be the most obvious way of slapping MissingNo in the games. They'd obviously have to stylize it heavily so it's not incredibly nightmarish, but the art I pointed out seems to do a decent job of that.