I had a creature in play with Sheltered By Ghosts attached, giving it Ward 2. My opponent had 2 untapped lands, one Mountain, one Forest. He tapped the forest to cast Coordinated Clobbering, tapped two of his creatures, targeted my creature and the spell resolved and dealt damage. This is incorrect, as he should have had to pay the Ward 2 cost to target my creature, which he did not have available and making the Coordinated Clobbering "fizzle" to put it in old terms.