And we're off to round 4!
I revived 15 new FX, including the auto-trigger ones you listed:
FX_ENEMY_SPIKESHIELD_C --as you described
FX_GEN_AREASCHADEN --green and bigger version of FX_ENEMY_TENERGY_EXPLOSION!
FX_GEN_CASTBLOCK --as you described
FX_GEN_FRAG --red smoke with red splatter on the ground
FX_GEN_FRAG_BLACK --black version of FX_GEN_FRAG
FX_GEN_FRAG_DUST --yellow version of FX_GEN_FRAG
FX_GEN_FRAG_GHOST --blue sparkle-lines, similar to FX_ENEMY_HEAL_C but bigger and as spell FX versions
FX_GEN_FRAG_GREEN --green version of FX_GEN