
Artifact spells you cast have convoke. (Your creatures can help cast those spells. Each creature you tap while casting an artifact spell pays for {1} or one mana of that creature's color.)
Chief Engineer has 4 printings, first in Magic 2015 (2014). EDHREC ranks it #7,099 among Commander cards. It appears most in Ovika, Enigma Goliath decks (2,897 on EDHREC). 1 public deck on TCG runs it. It has 7 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.