Please make it so that water shield ALWAYS replaces lightning shield if a shaman is running elemental orbit and casts water shield while they already have the other two shields on.
Shaman will want to cast unleash shield while using earth and water shields to root the target in the whilrpool.
The current functionality is to replace the least recent shield. Which could end up replacing earth shield with water on repeat cycles of unleash shield after lighting has been replaced after using water.