
Choose five permanents you control. For each of those permanents, you may search your library for a card with the same name as that permanent. Put those cards onto the battlefield tapped, then shuffle.
Clarion Ultimatum has 1 printing, first in Shards of Alara (2008). EDHREC ranks it #24,989 among Commander cards. It has 7 official rulings.
Cards that show up in the same decks on EDHREC.