
Sliver creatures you control have trample. (A creature with trample can deal excess combat damage to the player or planeswalker it's attacking.)
Groundshaker Sliver has 1 printing, first in Magic 2014 (2013). EDHREC ranks it #16,936 among Commander cards. It appears most in Sliver Hivelord decks (623 on EDHREC). It has 2 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.