(Toon 1)
#Showtooltip Tremor Totem
/castsequence reset=15 tremor totem,,,

(Toon 2)
#showtooltip Tremor Totem
/castsequence reset=15 ,tremor totem,,

(Toon 3)
#showtooltip Tremor Totem
/castsequence reset=15 ,,tremor totem,

(Toon 4)
#showtooltip Tremor Totem
/castsequence reset=15 ,,,tremor totem
This.

You need to combine it with your other totems ofcourse. In that case you replace the "," with the other totem names.

Junglelove,

Menthu