Hey,
I'm not sure if the Rund eof Power grants a discount on changing bound spells.
The FiF-Rulebook says concerning the Rune:
Rune of Power: Once per round, you may pay 1 less mana when casting a spell bound to this equipment or using a spell action provided by this equipment.
While Elemental Wand reads: As a quick spell, you may pay 3 mana to change the bound spell.
Does this already count as a spell action provided by the wand?
Thanks in advance