Gridlock

Gridlock enter with two Utilitycounter:

Tracks ~ {t}{b}{g}, remove an Utilitycounter:
Target opponent create a Trackssting token.

(Artifact | At the beginning of your turn. Tracksstings deals you three damage.
Whenever a creature enters under you control it
gets two damage. {4}: Sacrifice Tracksstings).

Make sure you..... never mind.