Amulet of guardian spirit, it comes as an amulet or a cap.

When worn, all non-poison damage will drain mana instead, hurting hp
only after mana is depleted.

The cap brand is intended only for a fixedart, but per dpeg's request,
it will be generated on ordinary caps for now, as a test.

1 files changed, 7 insertions, 0 deletions

diff --git a/crawl-ref/source/player.cc b/crawl-ref/source/player.cc
index aa79a289d6..b902943ec8 100644
--- a/crawl-ref/source/player.cc
+++ b/crawl-ref/source/player.cc
@@ -4495,6 +4495,13 @@ int player_mental_clarity(bool calc_unid, bool items)
     return ((ret > 3) ? 3 : ret);
 }
 
+int player_spirit_shield(bool calc_unid)
+{
+    return player_equip(EQ_AMULET, AMU_GUARDIAN_SPIRIT, calc_unid)
+           + player_equip_ego_type(EQ_HELMET, SPARM_SPIRIT_SHIELD)
+           + scan_artefacts(ARTP_SPIRIT_SHIELD);
+}
+
 // Returns whether the player has the effect of the amulet from a
 // non-amulet source.
 bool extrinsic_amulet_effect(jewellery_type amulet)