Kiss 'N Tell - S1-E4
Continuity mistake: When Link is turned into a frog, you can see that his sheath is still brown like before as he pushes the mummy away from him. But then as Zelda is tackling him out of the way of the mummy's attack, the sword is still at his side but suddenly without a sheath. A bush also appears next to the rock behind the mummy. (00:05:40)