Reckless Wurm
UMA-144The List
Reckless Wurm
{3}{R}{R}Trample
Madness {2}{R} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)
Bred for battle in the Grand Coliseum, these wurms annihilated whole ecosystems when released into the wild.