This to me seems to be a net downgrade to classes that use offense from additional NPC's (necro's, druids, conjurers), being that if evade is at its most successful (10% chance or so) and if there's additional deflection, its not unreasonable to say that classes are even more tanky towards pets.

The Evade half is fully intentional, and not something I'm worried about. The deflection part is one of many thing we'll keep an eye on. As Nep mentioned, a lot of those pets have quite a bit of hitroll, so the impact of deflection may be somewhat smaller.

How much effect will deflection have in a typical fight? (5%, 10%, 20%, etc?)

Depends on the matchup. 10% is probably close to normal, but either of the other figures are within the range of belief depending on who the attacker is and who the defender is. It's hard to imagine a scenario outside of the 0-20% range, and you'd also only see numbers close to 0% if the defender is wearing lots of clothing/etc.

valguarnera@carrionfields.com