I am excited about the arrival of the new Triumvirate of the Imperium characters (i.e. Celestine plus her bodyguard Geminii, Belisarius Cawl, and Inquisitor Greyfax), especially since it appears that ANY Imperium army can choose to take any of these three as a HQ choice, so Space Marines, Dark Angels, Blood Angels, Grey Knights, Deathwatch, Militarum Tempestus, Astra Militarum, Cult Mechanicus, Skitarii, Inquisition, Sisters of Battle, etc. can all take them in their armies.
Aside from what the characters themselves bring, which is significant, Celestine and Cawl both “unlock” special Relics that can be taken by any friendly characters in the same army. Here are my thoughts on what I think are some of the best of these:
—Unlocked by Belisarius Cawl—
 Memento-Mortispex (5 MBs) – At the start of each of your turns, choose a rule to apply to the bearer and their unit (or weapons as appropriate): Cognis Weapons (BS2 Snapfire, Flamers do 3 hits rather than d3 with Wall of Death in overwatch), Monster Hunter, Skyfire or Tank Hunter.
*APPLICATION — Perhaps the best new Relic available, I see this in the same class as the Hunter’s Eye and Gorgon’s Chain and Astral Grimoire (i.e. very competitive, don’t leave home without it). Being able to give an entire unit Cognis Weapons, Skyfire, Monster Hunter, or Tank Hunter, without any kind of Ld test/Psychic test/dice roll, is exceptional. Right out the gate, some of the best units to use this on include Grav Centurions, Astra Militarum blob squads, Kataphron Destroyers, Sternguard, Deathwatch Veterans, Deathwatch Terminators, Grey Knight Purifiers (with max Psycannons), Long Fang Packs (with max Lascannons), Blood Angel Gunslinger Vanguard Veterans, Sanguinary Guard with max Inferno Pistols, and Repentia Squads (with max Multi-Meltas).
Probably one of the very best options would be on a Dark Angel Biker Interrogator Chaplain leading a 10 man squad of Black Knights… the entire squad already has 18″ Rapid Fire TLed Plasma Weapons, so they can greatly benefit from Tank Hunters against vehicles, Monster Hunter against MC/GMCs, and Skyfire against Flyers and FMCs. On top of this, even if the squad Jinks (to take advantage of re-rollable Jink saves, from the Ravenwing special rule), you can use Cognis Weapons to make them Snapfire at BS2 which, combined with TLed, gives them a 50%+ hit rate even after Jinking, making them survivable AND potent in the same turn (usually you can only have one or the other).
 Omnissiah’s Grace (2 MBs) – Bearer has 6+ Invulnerable Save. If they already had an Invulnerable Save, they get a +1 to their Invulnerable to a max of 3+.
*APPLICATION — Not that great on a character without an Invul save already, but on one that already has a 5++ or 4++, like most Space Marine Captain equivelants or models in TDA, this in essence gives you a “free” Storm Shield without the drawbacks of losing attacks in close combat. Grey Knight Grandmasters, Thunderwolf Lords with PF/Wolf Claw combos, Tech-Priest Dominus with Conversion Field wargear, Interrogator-Chaplains and Chaplains of all flavors, Cataphractii Terminator Captains, Imperium Psykers that can cast Forewarning on their unit, Watch Masters, Skitarii Ruststalker Princeps with dual Transonic Blades/Chordclaw and Conversion Fields, and TDA Inquisitors all can benefit quite a bit from this very affordable Relic.
 Saint Curia’s Autopurger (5 MBs) – Models charging the bearer and their unit do not get extra attacks for charging. All models that are locked in combat with the bearer and their unit must pass a Toughness test at I10 step, or suffer 1 Wound for each test failed (can take saves as normal).
*APPLICATION — The debuff against enemy charging units is quite handy, especially against strong melee squads like Wulfen, Death Company, and Khornate unit which rely on Rage to increase their attack numbers, but where this Relic really shines is against low Toughness opponents (i.e. Eldar of all types, most T3 “human-based” forces, Gaunt/Ripper swarms, Necron Scarabs, etc) due to the second half of this rule. Forcing a wound for every failed Toughness test can be a game-changer, ESPECIALLY if you can combine it with Enfeeble (from the Biomancy discipline), Rad grenades (from an attached Inquisitor), and/or Skitarii Vanguard, with their “Rad-saturation” rule to reduce enemy toughness even further (imagine charging Eldar units reduced to T2 by Rad Grenades from an attached Inquisitor and then using this relic, causing Wounds on rolls of 3+ for every model locked in combat with you!). Overall, this is best used as a “crowd-control” Relic to rapidly thin out enemy hordes, especially since it inflicts these wounds at I10, before your opponents can strike back (I think this Relic is particularly potent against Genestealer Cult, who have high Initiative and close combat output, but low T and weak saves, meaning you can be charged by them and inflict massive damage before they even get to swing).
*APPLICATION — Like the “Saint Curia’s Autopurger” Relic, the first part of this piece of gear is solid (i.e. giving a 4++ to the bearer), but the real reason for taking it is for the second part of the rule, preventing Deep Strikes within 12″ and causing an auto-Mishap if they scatter to within 12″. This is such a potent piece of Wargear, especially when use to protect key units/vehicles (like your Warlord or an Imperial Knight, for example), against threats like Drop Pod Meltacide units, Wraithguard with an attached Dark Eldar IC with a Webway Portal, deep striking units with massed Flamer templates, enemy units that can assault on the same turn they Deep Strike (i.e. CSM Raptor Talon, Skyhammer Annihilation Force ASM), etc. etc. Putting this Relic on a mobile character, like a Bike or Jump Pack equipped IC, allows you to move this 24″ circle of “no Deep Strike” rapidly all over the table-top, thereby denying you opponent significant real estate and greatly hampering his tactical options.