Boomer Scrapper (936) - Surge-Foil

Whenever this creature enters or attacks, you lose 1 life and create a Junk token. (It's an artifact with ", Sacrifice this token: Exile the top card of your library. You may play that card this turn. Activate only as a sorcery.")
Whenever a token you control leaves the battlefield, put a +1/+1 counter on this creature.