progression. Anyone else can still summon one, using the rules for Improved Familiar
Warp-Aci count as having an level adjustment of 8
A warp-aci has the same stats as a pseudodragon of its level. It's caster level is the same as of it's owner for spell effects.
It however can't use poison - instead, it has at-will polymorph self, dimensional door and teleport
it has a +8 permanent bonus to Hide checks