Make some unrands more interesting, bring back two

* Make Zhor have rC+++ (as it is it has some trouble competing with a robe of
resistance)
* Make Leech drain hp on all hits, rather than 3/5ths like other vampiric
weapons
* Bring back Sniper: it's a +15 vorpal crossbow with slower fire (ranged dark maul)
* Bring back Snakebite: it's a +5 venom dwhip that curares the defender on 1
out of 5 hits
* Make the Singing Sword a bastard sword (this is fairly big buff, but it still
has no brand)
* Remove Bullseye, give Gong 21 more SH and 5 less EV (remaining a normal-sized shield)

1 files changed, 9 insertions, 0 deletions

diff --git a/crawl-ref/source/art-func.h b/crawl-ref/source/art-func.h
index e51887b946..8b2a02e196 100644
--- a/crawl-ref/source/art-func.h
+++ b/crawl-ref/source/art-func.h
@@ -817,6 +817,15 @@ static void _PLUTONIUM_SWORD_melee_effects(item_def* weapon, actor* attacker,
 
 ///////////////////////////////////////////////////
 
+static void _SNAKEBITE_melee_effects(item_def* weapon, actor* attacker,
+                                     actor* defender, bool mondied, int dam)
+{
+    if (!mondied && one_chance_in(5))
+        curare_actor(defender, attacker, "curare", attacker->name(DESC_PLAIN));
+}
+
+///////////////////////////////////////////////////
+
 static void _WOE_melee_effects(item_def* weapon, actor* attacker,
                                actor* defender, bool mondied, int dam)
 {