Matara Kan, Cockroach

Toxic 2
{0}: Regenerate, use this ability only once each turn.
{p/w}{p/w}{p/w}: If the top card of any opponents graveyard is a creature you may have them put
it onto the bottom of their libaray, if you do return Matara to the battlefield tapped. Use
this ability only if Matara is in the graveyard.