WL Traits:
Champ of Emperor: Friendly Custodes can heroically intervene within 6"
Peerless Warrior: Your warlords attacks explode on 6s in melee.
Superior Creation: 5+ fnp
Impregnably mind: Can deny witch 1 per psychic phase, add 1 to this deny.
Radiant Mantle: -1 to hit your warlord.
Emperor's Champion: Reroll dice for damage on your warlord.
Relics:
Oblitarum: replaces grenade launcher, Assault 1, Str 10, -4ap, D3 damage.
Raiment of Sorrows: Roll d6 each time custodes bike or infantry dies, on a 4+ can shoot or attack. Banner relic. Can't use stratagem which also does this.
Eagles eye. Improve invuln by 1 to max of 3+.
Auric Aquilas. Bike with 3+ invuln save.
Praetorean Plate: Terminator armour. Pick an imperium character, when they are charged, your custodian appears 3" away and effectively heroicaly intervenes.
Wrath of Angles: Banner Bearer with -1 to hit banner. Loses -1 to hit. Friendly Imperium models pass morale phases. 1 time use 6" d3 mortal wounds against all people. Less likely to affect Custodes.
Auric Shackles: -1 attack to enemies. Gives extra points for slay the warlord in games.
Castellans mark: Can remove the character and a unit and set up somewhere else. Like mark of deceiver. After set up but before start.
Faith absolute: -1 to hit banner only. Loses -1 to hit, friendly imperium and biker units within 6" pass morale. Can attempt to deny one power per turn.