Caustic Marshlands

Swamps you control have ''{t}: Target creature without flying or reach gets -1/-1 until end of turn. If it would die this way, exile it instead of putting it anywhere else.''
''Ya pretty leather boots won't save ya here,
mate. Hear me out: ya'd betta think about another way to cross these moors, or nobody will hear about ya anymore.'' —Bog's village elder