ditto pikachu pokemon card PSA 9 [Pikachu] (Graded Card) Common Card Type 2005 Pokemon EX Delta Species

You can utilize Master Transmuters activated ability to return an artifact you control to its owners hand and put Valors Flagship onto the battlefield from your hand

Even if an opponent only controls one key enchantment, they can just sacrifice their worst creature to keep it around

Illustrated by Tyler Walpole Standard Not Legal Alchemy Not Legal Pioneer Not Legal Historic Not Legal Modern Not Legal Brawl Not Legal Legacy Legal Comp

If a Mountain you control leaves the battlefield between the time Valakut's second ability triggers and the time it resolves, be aware of whether that was the Mountain that caused Valakut's ability to trigger or not