
Whenever you cast an artifact spell, create a 1/1 colorless Thopter artifact creature token with flying.
Efficient Construction has 2 printings, first in Aether Revolt (2017). EDHREC ranks it #2,584 among Commander cards. It appears most in Breya, Etherium Shaper decks (7,089 on EDHREC). It has 1 official ruling.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.