Burning-Tree Bloodscale (French) - "Ecaillesang de Brulebranche" (PSAL-I30) [Salvat 2005]

Bloodthirst 1 (If an opponent was dealt damage this turn, this creature enters with a +1/+1 counter on it.)
{2}: Target creature can't block this creature this turn.
{2}: Target creature blocks this creature this turn if able.