Word processor with collaboration

I need an iPad App of a word processor that will allow many users to join and type, and see what they type via wifi. The basic word processor functions are a must.Any graphic design will be done by a skilled professional that the developer will hire, in case they don't have one in their team.

Need a ms-word similar word processor ，It will include the following features and options:1 Normal.dot2 WordArt3 Macros4 Layout issues5 Bullets and numbering6 Creating tables7 Using formulas8 AutoSummarize9 AutoCorrect10 Subscript and superscript issues

Need to do the artwork and do a really cool graphic design