
Dragon creatures you control get +3/+3.
Crucible of Fire has 8 printings, first in Shards of Alara (2008). EDHREC ranks it #3,754 among Commander cards. It appears most in The Ur-Dragon decks (8,951 on EDHREC). 3 public decks on TCG run it.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.