The choice to switch on Zelda’s Swordfighter type is governed by a source identified only as Electrical power, which it does not appear to be overly abundant, depending on what we played. The things that Zelda can summon as echoes are governed by the strength of her Tri Rod. https://listbell.com/story7893343/the-legend-of-zelda-echoes-of-wisdom-gameplay-fundamentals-explained