Forum:Special Summon in Battle Phase

Me and a friend have been debating about this and I'm not really sure on who's right about this.

If a person special summoned a monster during their battle phase, can that monster attack? My friend keeps saying they can't and I keep thinking they can. I haven't found the answer to this on the rulebooks so a source if possible would be really apreciated.

VolcanicNinja 18:20, 29 June 2009 (UTC)