"It's a clever design. You should look closely at its gearing after it swallows your head."
—Jhoira, master artificer

Mantis Engine

{2}: This creature gains flying until end of turn. (It can't be blocked except by creatures with flying or reach.)
{2}: This creature gains first strike until end of turn. (It deals combat damage before creatures without first strike.)

Tenth Edition

{2}: Mantis Engine gains flying until end of turn.
{2}: Mantis Engine gains first strike until end of turn.

Tawnos left a legacy of animal designs in many of Urza's creations.

Urza's Destiny

o2: Mantis Engine gains flying until end of turn.
o2: Mantis Engine gains first strike until end of turn.