(Meadow Clump isn't a spell.)
When Meadow Clump enters the battlefield, return a land you control to its owner's hand.
, : Tap target artifact with converted mana cost X or less.
, : Add to your mana pool.
, 
: Tap target artifact with converted mana cost X or less.
, : Add 
to your mana pool., : Add to your mana pool.
