I don't mind adding blindsense or blindsight, but I'm now questioning the blind SQ, since the original text says that they have "small keen eyes."
Blast it! I read the bit about the eye patches but it just didn't register.
Must have forgotten to put my brain in gear.
I'll snip out the blind SQ.
I also prefer acid and poison and agree about releasing the toxic fumes when hit by fire or electricity. And when it dies, so maybe it should be an expanded version of death throes.
So are we doing this as a separate SA? Something like:
Death Throes (Ex): If a shadowsponge is killed it will produce toxic fumes (see below) for [
1d3?] rounds, covering a radius equal to six times the shadowsponge's reach (60 feet radius for a typical shadowsponge).
Flammable (Ex): If a shadowsponge is struck by a fire or electrical damage it will produce toxic fumes (see below) for 1 rounds, covering a radius equal to three times the shadowsponge's reach (30 feet radius for a typical shadowsponge).
Engulf (Ex): A shadowsponge can simply mow down Medium or smaller creatures as a standard action. It cannot make a slam attack during a round in which it engulfs. The shadowsponge merely has to move over the opponents, affecting as many as it can cover. Opponents can make opportunity attacks against the shadowsponge, but if they do so they are not entitled to a saving throw. Those who do not attempt attacks of opportunity must succeed on a DC 17 Reflex save or be engulfed; on a success, they are pushed back or aside (opponent’s choice) as the shadowsponge moves forward. Engulfed creatures are considered to be grappled and trapped within its body, every round they are engulfed they take [
1d4+4?] crushing damage and are exposed to the poison and acid of the shadowsponge's toxic fumes (see below). The save DC is Strength-based.
Toxic Fumes (Ex): A shadowsponge's interior is filled with corrosive and poisonous vapors. Any creature exposed to these toxic fumes must make a DC
X Fortitude save each round, on a success they are dazzled for
Y rounds and take
Z acid damage, on a failure they are blinded for
Y rounds and take
V acid damage and
W [Str or Con?] damage.
Normally a shadowsponge's toxic fumes only affect opponents it has engulfed, but it will emit these fumes when dying or if it is struck by fire or lightning - see its Death Throes and Flammable traits above.