Sigma, Maverick Scourge

First Strike, Menace
Virus 6 — Whenever Sigma, Maverick Scourge
deals damage to an artifact creature with
converted mana cost of six or less, gain control
of that creature for the remainder of the game.
{p/b}{p/b}{p/b}{p/b} - Sigma, Maverick Scourge deals
6 damage to target creature.