The beast form keyword on a power indicates that the power can only be used while its user is in beast form.[PH2:219][RC:116] A character can change into beast form by using the wild shape druid power.[PH2:84][HotF:126]
In addition, while a character is in beast form due to wild shape, the character cannot use any weapon or implement attack power, unless the power has the beast form keyword.[PH2:84][U :E2][HotF:126]