The main Combo:

Mask yourself as [[Corruptor]] to turn your mortals, specifically [[Town Priest]] into undead. This lets [[Town Priest]] return itself to your hand utilizing its genesis effect. Using the cost reduction of [[Town]] or [[Donnybrook Inn]], you can now repeatedly play and bounce [[Town Priest]], triggering [[Ring of Morrigan]] and, as a backup, [[Merlin's Staff]]. This will usually put your opponent on death's door. Suitable finishers can be found using [[Toolbox]] and [[Common Sense]].

Finding the Combo:

[[Town Priest]] can be found using: [[Call to War]] (as long as you are not masked as Corruptor) and [[Silver Bullet]].

[[Town]] can be found using: [[Ersatz Platz]], with [[Land Surveyor]], [[Tithe]] and [[Crossroads]] filtering for it.

[[Ring of Morrigan]] can be found using: [[Highland Princess]]

Additionally, the deck contains [[Sisters of Avalon]], [[Apprentice Wizard]], [[Grandmaster Wizard]], [[Pnakotic Manuscript]], [[Browse]], [[Blink]] and [[Wizard's Den]] as generic Cantrip to find the Combo or Tutors for the Combo.

The game plan:

Because the objective is to survive until the Combo can be reached, the early game plays like a control deck. For this, minions are added to remove and block aggressive opposing minions. Some additional removal, in the form of magic spells that can go 2 for 1, also help with this. A wide [[Common Sense]]/[[Toolbox]] package is included to deal with problematic permanents ([[Lightning Bolt]], [[Magic Missiles]], [[Bury]] and [[Grapple Shot]] for minions and [[Disenchant]] and [[Bury]] for artifacst and/or auras), reposition game pieces ([[Telekinesis]], [[Blink]], [[Displace]], [[Tactical Move]] and [[Grapple Shot]]) or finish the game ([[Lightning Bolt]], [[Magic Missiles]] or [[Grapple Shot]])

A good starting hand will contain the Combo or pieces to find the combo, some survivability and ideally at least one (A) and one (E) threshold. The first turns focus on eveloping mana, staying safe and masking as [[Pathfinder]] asap. This enables the development of the mana base in parallel to casting cantrip, tutor and removal spells. [[Archimago]] and [[Deathspeaker]] are prresent in the collection to reuse valuable spells, with the [[Sorcerer]] representing a generic draw engine if all other options fail.

Corruptor Combo

@Arcas