Revamp Olgreb's Toxic Radiance

OTR was a very lackluster spell, even in the venom mage starting book,
where it had a relatively captive audience. This is aimed to improve
that situation without directly turning it into 'refridge, except
poison'.

OTR now causes the caster to radiate a toxic aura over the course of
several turns after casting (extendable by recasting), and inflicts
a small amount of impact damage in addition to a (weaker) lingering
poison. The damage done decreases with distance from the caster, doing
around 35% damage at the very edge of LoS.

While it inflicts no impact damage upon a player casting it, the poison
status thus inflicted now bypasses rPois. This makes it somewhat more
hazardous to some people's health (perhaps commensurate with its
increased power) but also synergizes more nicely with cure poison.

Finally, OTR no longer has the curious property of being unable to
hit invisible creatures, even when you can see them.

1 files changed, 1 insertions, 0 deletions

diff --git a/crawl-ref/source/mon-info.h b/crawl-ref/source/mon-info.h
index b50f97f5c7..18b318b68d 100644
--- a/crawl-ref/source/mon-info.h
+++ b/crawl-ref/source/mon-info.h
@@ -102,6 +102,7 @@ enum monster_info_flags
     MB_WIND_AIDED,
     MB_SUMMONED_NO_STAIRS, // Temp. summoned and capped monsters
     MB_SUMMONED_CAPPED,    // Expiring due to summons cap
+    MB_TOXIC_RADIANCE,
     NUM_MB_FLAGS
 };