User blog comment:Haiken/Unconfirmed TCG Promos/@comment-26088259-20160521065446/@comment-4906233-20160521121604

Those sound like misprints, but I've never found any cards with wrong text. The closest thing to a proper misprint in Duel Masters (that I know of), would be the cards with yellow illustrator text instead of white.

If such a card is found, then the first thing to do is verify it's authenticacy. The only cards with wrong text that I've seen are fakes. Like this one: http://www.worthpoint.com/worthopedia/error-duel-masters-ballom-master-1497974716

The only promo that differ from the normal version in the terms of effect (that I know about) is the Scream Slicer promo, which only has 2000 Power.