
When this creature enters, you may search your library for a Treefolk or Forest card, reveal it, then shuffle and put that card on top.
Treefolk Harbinger has 2 printings, first in Lorwyn (2007). EDHREC ranks it #8,532 among Commander cards. It appears most in Doran, Besieged by Time decks (5,792 on EDHREC).
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.