The Ageless Watch can be used to reduce the age of Wanda; every use will lower her age by 8. It has a cooldown of 2 minutes and requires 1 Time Pieces, 2 Marble and 1 Red Gem to craft.
Multiple Ageless Watches have their own different cooldowns and can be used in quick succession to restore her age.
Tips
When Wanda gets hit, her age will not change instantly, but gradually increase to ultimately match the damage received, so she can use the Ageless Watch to cut off the age increasing debuff and reduce the age she would have gained as a result.
Gallery
Concept art
Concept art
Wanda Aging concept animation and return back ages animation from "Rhymes With Play" #282.