Renaissance

Goblin Rock Sled

Trample
Goblin Rock Sled doesn't untap during your untap step if it attacked during your last turn.
Goblin Rock Sled can't attack unless defending player controls a Mountain.

Fourth Edition Foreign Black Border

Fourth Edition

Trample
Cannot attack if defending player controls no mountains. Rock Sled does not untap during your untap phase if it attacked during your last turn.

The Dark

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.