Aethersteel Galleon

Aethersteel Galleon enters the battlefield with X +1/+1 counters on it. If X was five or more, Aethersteel Galleon's base power and toughness both become 3.
X: Aethersteel Galleon becomes an artifact creature and gains flying until end of turn.
"It is an odd construct indeed... drifting about at what appears to be a conscious leisure."
- Ur-Saracine