  The wooden /bCore/z gives a wand one of three personalities, felt as a swing in its power.
<~><~>  Wandering cores, such as /bDark Oak/z, /bSpruce/z, /bBastion/z and /bEvermore/z, grow stronger in a freshly entered biome and weaker if they linger too long in one place. Keep moving.
<~><~>  Adventurous cores, such as /bJubilee/z, /bVermilion/z, /bJungle/z and /bAcacia/z, reward a varied spell list and sour if you cast one spell over and over. A couple nights of sleep clears their memory.
<~><~>  Every other core is Ambivalent, with steady power and no moods.
