Gemcrafter of the Vaal

When Gemcrafter of the Vaal enters the battlefield, put a 1/1 black assassin creature token with deathtouch under an opponent's control.
Gemcrafter of the Vaal gains +1/+1 for each artifact you control.
Assassin tokens must block Gemcrafter of the Vaal whenever able.
"If I die alone, tell them I did it for science."