name: Goblin Rock Sled
originalText: Trample
  Rock Sled may not attack unless opponent controls at least one mountain. Rock Sled does not untap as normal during your untap phase if it attacked during your last turn.
printings: 4BB, 4ED, DRK, REN
text: Trample
  This creature doesn't untap during your untap step if it attacked during your last turn.
  This creature can't attack unless defending player controls a Mountain.
type: Creature — Goblin