Rhyddan Chameleon

Cover {2}{g} (If the cover cost is paid, Rhyddan
Chameleon enters the battlefield attached to target
land you control. As long as it is in cover, it cannot
attack or block. Unattach it any time you could cast a sorcery bypaying its mana cost.)
Reach
{t}: Destroy target creature with flying that is attacking you. Use this ability only if Rhyddan Chameleon is in cover.