Nitrun HELP!!

[Draconigena]

I use 3 spider with the brittle webbing and spiderling swarm abilities.
I have 2 amethyst spiderlings and a feverbite one, but there are several spiders with the same set of abilities.
What I do:
1. brittle webbing until it hits
2. swarm => deals double damage because of the webbing
3. strike until webbing runs out

most of the times I won't get a second swarm on the first pet (he mostly kills my spider with 1 turn CD left), so if I see I am about to get killed, I cast the webbing again, so that my second spider can start straight away with the swarm (which is the hard hitting ability)

the swarm hits 5-6 times (you can get unlucky with misses though, but it should not be consistent) for a total of about 600 damage.
The combination of your 3 abilities brings him down to about 50% HP when your first pet dies.