Black Pearl Aeon Stone:
Trigger you are targeted by a mental effect;
Effect You receive a +4 status bonus to your saving throw against the triggering effect. Whether or not your save is successful, the aeon stone attempts a counteract check at +30 to immediately reflect a copy of the effect back at the originator, targeting it using the creature’s own relevant statistics but controlling the effect as if you had cast it.Every time you activate this aeon stone, attempt a DC 5 flat check. On a failure, the stone shatters and loses its magical properties forever.
Contingency: Trigger I take damage; Effect Cast Time Jump
Convincing Illusion: Trigger A creature succeeded, but didn't critically succeed, at a Perception check or Will save to disbelieve an illusion from a spell that you cast; Requirements You are within 30 feet of the observer and the illusion; Effect You use your deceptive skills to make your illusions seem even more real. Attempt a Deception check against the target's Perception DC. If you succeed, the target fails to disbelieve the illusion.
Robe of the Archmagi: Frequency Once per day; Trigger You attempt a saving throw against an arcane spell, but you haven’t rolled yet; Effect You automatically succeed at your save against the triggering arcane spell.
Shadow Siphon: Trigger A spell or magical effect deals damage; Range 30 feet; Effect Exchanging material energy with that of the Shadow Plane, you transform the triggering spell into a partially illusory version of itself. Attempt to counteract the target spell. If the attempt is successful, any creatures that would be damaged by the spell instead take only half as much damage, but the spell otherwise works as normal. Treat shadow siphon's counteract level as 2 higher for this attempt.