Sefris: Dungeons of Undeath (EDH / Commander)

'Sefris of the Hidden Ways' powers a creature heavy, recurring ETB/LTB and Dungeon pay-off value engine. While this build is equipped to protect Sefris, the value competes on it's own and 'Radiant Solar' makes a capable lieutenant. While all +/- 40 creatures are selected for utility, many provide multiple pay-offs.

Creature Value Highlights:

Protection + Graveyard triggers:

Glen Elendra Archmage - sac to counter, goes to grave and persists back to the 'field.
Benevolent Bodyguard - sac for protection, goes to grave.
Siren Stormtamer - sac to counter, goes to grave.
Malevolent Hermit // Benevolent Geist - sac to counter, goes to grave + recursion.
Overcharged Amalgam - exploit to counter, grave trigger.

Removal + Graveyard trigger:

Angel of the Ruins - removal ETB, cycle ramp --> goes to grave.
Shriekmaw - removal ETB, evoke to grave.
Wispmare - removal ETB, evoke to grave.
Solitude - removal ETB, evoke to grave.
Plaguecrafter - sac ETB --> to grave
Cataclysmic Gearhulk - wipe ETB
Ashen Rider - removal ETB+LTB

Recursion + Graveyard trigger:

Karmic Guide - recur to 'field ETB, echo to grave.
Doomed Necromancer - sac, recur to 'field --> goes to grave.
Obsessive Stitcher - sac, recur to 'field --> goes to grave.
Undead Gladiator - cycle --> to grave. self-recur to hand + discard.
Master of Death - self-recur to hand.
Athreos, God of Passage - creatures upon grave --> recur to hand.
Mikaeus, the Unhallowed - non-human creatures upon grave --> recur to field.
Priest of Fell Rites - sac to grave, self-recur via unearth
Corpse Connoisseur - tutor to grave ETB, self-recur via unearth
Luminous Broodmoth - re-cur non-flying creatures upon grave.

Ramp + Graveyard triggers:

Angel of the Ruins - cycle ramp to grave.
Burnished Hart - sac ramp to grave.
Timeless Dragon - cycle ramp to grave, recur to field

Draw + Graveyard triggers:

Mulldrifter - draw 2 ETB, evoke to grave.
Champion of Wits - draw/discard on ETB, self-recur from grave.

Tutor + Graveyard triggers:

Sidisi, Undead Vizier - opt to sac a creature ETB, tutor a card to hand.

All Dungeon Triggers:

Radiant Solar - any of your non-token creatures upon ETB.
Triumphant Adventurer - attack trigger
Midnight Pathlighter - single trigger for creatures damaging a player.
Yuan-Ti Malison - combat damage to player.
Nadaar, Selfless Paladin - ETB + attack
Immovable Rod - untap trigger
Thorough Investigation - sac clue token trigger
Dungeon Map - tap trigger

Other Notes:

Morbid Opportunist - draws 1 card per turn for any other creature death.
Culling the Weak - instant sac to grave + ramp.
Dakkon, Shadow Slayer - +1 surveil 2 for grave trigger, -3 for removal.
Vanish into Memory - temporary removal + draw or protection + ETB trigger on your own creatures.
Tortured Existence - discard creature card to grave + recur another creature to hand: 1 mana dungeon trigger on loop each turn w/ Sefris.
Sakashima the Impostor - can clone Sefris for double triggers
Phyrexian Tower - sac --> grave + ramp
High Market - sac --> grave + life
Riptide Laboratory - bounce wizards (Sefris) to hand for protection and ETBs
Gift of Immortality - protect Sefris in theme or any creature for recurring grave + ETB/LTB triggers.
Strionic Resonator - Copy triggered ability for 2 (double up Sefris abilities + others)
Forbidden Alchemy - look at top 4 from library, keep 1, 3 to grave.

Interesting cards not in the current build:

Step Through - ignore casting cost, 'wizardcycle' instead to tutor a key creature instantly for 2.
Mimic Vat - exiles a creature after it dies (grave trigger still works), releases already exiled creature back to the grave (another grave trigger) + recur ETB/LTB's.
Timeless Dragon - cycle ramp to grave, recur to field
Semester's End - Exile all of your creatures until end of turn instantly: Board state protection +/or recur ETB/LTB's.
Nimble Obstructionist - cycle to counter, goes to grave.
Reassembling Skeleton - self recurring chump blocker.