Wild shape is probably the most complicated rule in pathfinder1 to find a simple playable solution I use the buffs feature: Add a new Buff i.e. beast shape (large) and add these buffs: +4 to strength + 4 to natural -@{ac_armor} to armor class -2 to dexterity +2 size to strength -1 size to attack -1 size to AC Also I just added a natural melee attack (1d6) to the weapons and forgo all futher differences of animals for attacks. Works for almost all animals and is the truest implementation to wild shape I can come up with. For medium creatures it looks like this +2 to strength +2 to natural -@{ac_armor} to armor class implement other sizes accordingly.