I intend to acquire a Tentacle Cloak (7 Attacks) at some point to add 2 more Bludgeoning attacks once per day for a minute.
He's the Vivisectionist and Beastmorph archtypes, so headds Sneak Attack on each of those attacks where SA applies (I've got another player, a Rogue, who's my flanking buddy, so often). When I reach level 10 (Currently level 6), I'll be able to Pounce for Full Attacks while moving. I have the privilege of rolling my attacks, than dropping a cup-full of dice for damage. It makes me giddy.
Alternately, a Summoner can stack limbs with natural attacks on an Eidolon. That number can get pretty high.