Beast Gascogne

Menace, Trample, Haste. Whenever it deals combat damage to a player, put a +1/+1 counter on it and it gains First Strike until end of turn. If it would be destroyed, remove all +1/+1 counters instead. If it has none, destroy it.

{r}: Activate only during an opponent’s upkeep. If they cast a creature spell this turn, it attacks it.
{r}, Sacrifice a creature: It fights target creature.