Construção Eficiente (Efficient Construction) (pt)
Enchantment (CMC 4)
Whenever you cast an artifact spell, create a 1/1 colorless Thopter artifact creature token with flying.
Decks with Efficient Construction
[CMM] Commander Masters #88 (U)
en
de
es
fr
it
ja
pt
zhs
[AER] Aether Revolt #33 (U)