Spire Serpent

Duel Decks: Mirrodin Pure vs. New Phyrexia (TD2) #15 · Common · Creature — Serpent

Mana cost: {4}{U}

Defender
Metalcraft — As long as you control three or more artifacts, this creature gets +2/+2 and can attack as though it didn't have defender.

A mirror to draw its eye, a rod to rouse its rage, and a sword to break its bonds.

Power/toughness 3/5 · Illustrated by Johann Bodin · Released May 14, 2011

Printings

2011-06-01 · wotc — Spire Serpent still has defender if you control three or more artifacts, although it will be able to attack.
2011-06-01 · wotc — If Spire Serpent has been declared as an attacker, and you stop controlling three or more artifacts later in combat, Spire Serpent continues being an attacking creature until combat ends.