The Ents have come to Isengard to remind Saruman of the danger he has risked with his plans.
You have come to the ring of Isengard with as many of the Ents that responded to your call. The time has come to remind Saruman of what he has forgotten!
The Ents have torn down the gate that gives entrance to the Ring of Isengard.
The Ents have smashed open the gate to Isengard, and now you should proceed into the ring.
Saruman has fought back with flame and smoke!
The Ents have diverted the river and flooded the Ring of Isengard. Their purpose: to wash it clean of Saruman's filth.
Saruman's servant has gone to join his master in the tower.