Melira, Metalworking Researcher (TUS-015 R) [The Underworld of Secrets]

This card cannot be canceled. Spells you control and activate or automatic abilities you control cannot be canceled. [Enter] If you control in public zones and own revealed outside the game a combined number of seven or more Metal Lifeforms with different names, you may search your deck for a fire or water chant with total cost 2 or less and play it without paying its cost. If you do, shuffle your deck.