New spell: Forceful Dismissal

In the spirit of adding more dynamic options to summon play besides
'make more creatures to throw at things', Forceful Dismissal is a
level 6 summonings spell which violently unsummons all of your nearby
summoned creatures, causing magical explosions around where each of
them were.

The explosion damage is based both on spellpower as well as the HD of
the creature being unsummoned (so imps make much less effective 'bombs'
than a hell sentinel would).

Damage numbers are even more provisional than usual, since it's
somewhat hard to know how this will play outside a real game. The aim
is not to make immediately detonating summons in melee range the
generally optimal thing to do, as the full damage over a summon's
lifetime ought to exceed it in many cases, but rather something you
might use in cases where burst damage was especially important, or
your defensive line looked about to crumble anyway, and so on.

I considered adding a drawback that casting it would temporarily
prevent RE-summoning anything for several turns, making it more
desireable to get further value out of the living summon before
exploding it, but I'm not certain that's necessary, and would like to
see how this version plays out first.

1 files changed, 13 insertions, 0 deletions

diff --git a/crawl-ref/source/spl-data.h b/crawl-ref/source/spl-data.h
index 01a525e348..185e4f8a1c 100644
--- a/crawl-ref/source/spl-data.h
+++ b/crawl-ref/source/spl-data.h
@@ -3708,6 +3708,19 @@ struct spell_desc
 },
 
 {
+    SPELL_FORCEFUL_DISMISSAL, "Forceful Dismissal",
+     SPTYP_SUMMONING,
+     SPFLAG_AREA,
+     6,
+     200,
+     -1, -1,
+     0,
+     NULL,
+     false,
+     false
+},
+
+{
     SPELL_NO_SPELL, "nonexistent spell",
      0,
      SPFLAG_TESTING,