Trax, Scent Tracker

If one or more of your opponents would be dealt damage or lose life from any source other than
Trax, Scent Tracker, put scent counters on those players equal to half of the damage taken or life
lost instead.
Remove X scent counters from an opponent:
Search your library for a creature card with
converted mana cost X or less, put that creature
onto the battlefield under your control, and
shuffle your library.