Whenever damage would be dealt to you, Delaying Shield prevents the damage.
Delay counters cannot be placed on Delaying Shield due to Solemnity.


Prevent all damage that would be dealt to you

Delaying Shield

Solemnity

Phyrexian Unlife prevents you from losing the game due to having 0 life.
Delaying Shield prevents you from taking infect damage due to Phyrexian Unlife.

You are unable to lose the game due to damage or lifeloss

Phyrexian Unlife

At the beginning of your upkeep, Delaying Shield triggers.
Holding priority, if Delaying Shield has any delay counters on it, activate Resourceful Defense by paying {4}{W}, moving the delay counters from Delaying Shield onto Resourceful Defense.
Resolve the Delaying Shield trigger, doing nothing.
While Delaying Shield is on the battlefield, all damage that would be dealt to you is replaced by putting that many counters on Delaying Shield instead.
Repeat each turn as necessary.

Resourceful Defense

At the beginning of your upkeep, Delaying Shield triggers.
Holding priority, if Delaying Shield has any delay counters on it, activate Vampire Hexmage by sacrificing it, removing all delay counters from Delaying Shield.
Resolve the Delaying Shield ability, doing nothing.
If Vampire Hexmage is in your graveyard, activate Gravewaker by paying {5}{B}{B}, returning Vampire Hexmage from your graveyard to your hand.
Repeat.

Combos with "Delaying Shield"