
{1}, {T}, Discard a card: Put a study counter on Grimoire of the Dead.
{T}, Remove three study counters from Grimoire of the Dead and sacrifice it: Put all creature cards from all graveyards onto the battlefield under your control. They're black Zombies in addition to their other colors and types.
Grimoire of the Dead has 4 printings, first in Innistrad (2011). EDHREC ranks it #5,508 among Commander cards. It appears most in Gisa and Geralf decks (3,013 on EDHREC). 2 public decks on TCG run it. It has 1 official ruling.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.