Unbound Brawler

{g}{g}, {ut}: Target creature blocks Unbound Brawler this turn if able. ( {ut} is the untap symbol.)
Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)
There's nothing more foolish than chaining a giant, and nothing more fatal than letting it escape.