Round 359: The bloodstriker seems to be more susceptible to whatever Sir Walter has in mind. (rolled 15 Will save). There is a thin mist that will persist for quite a while, centered at 60N80E, and twenty feet high. It does not hamper vision at all.
Round 360: The bloodstriker says he will be your friend (rolled natural 1).
Round 361: A swarm of tiny dinosaurs chirps into the arena to 60N80E. The big dinosaur misses with its AoO (rolled 16). The big dinosaur takes 12 points of damage from the many tiny bites, leaving it with 82 HP. When it is bitten, its spurting blood kills enough tiny lizards that the swarm takes 9, and the big dinosaurs spikes do 3 more points of damage to the swam. The swarm has 62 HP remaining.
Sir Walter recognizes the swarm as a needletooth swarm, a swarm of tiny dinosaurs. They can take damage from weapons, but are not susceptible to targeted spells of any sort because they do not have a hive mind, although they did succomb to the mind fog (rolled 7 Will save). Area affects inflict extra damage.
Do you want time compression while Sir Walter looks on, or do you want something else?