It can fend off attacks from effect monsters and change their battle position to defense position, having 0 DEF. It can be activated outside of the battle phase. However, normal monsters are unaffected.
The fact it says the page was last updated December 2016 might have something to do with it. (Evidently it was updated past that date anyway, given the inclusion of Security Orb, but still hints at it being long-abandoned.)
What is the card name that lets you sacrifice a card to increase another cards level?
Best cards now: wall of distruption, floodgate trap hole, super rush headlong, kunai with chain, anti magic arrows together with windstorm of etaqua, enemy controller, mirror wall and sphere kuriboh
Anti meta cards: man eater bug, fenghuang (good backrow removal monster), parallel twister, ancient gear beast (shuts the opponent's backrow down when attacks and negates monster's effects), forbidden chalice and cosmic cyclone
This is my opinion about the cards of the current metagame. What do you think about it?