Nazgûl enters, triggering its first activated ability, causing the Ring to tempt you; choose Nazgûl as your Ring-bearer, making it legendary.
Nazgûl's second activated ability triggers, putting a +1/+1 counter on each Wraith you control.
Activate Woe Strider by sacrificing Nazgûl.
Ratadrabik of Urborg triggers, creating a token copy of Nazgûl that's a 2/2 Zombie.
Resolve the ability from step 4, scrying 1.
Repeat from step 2.
This intricate loop turns the Ring's temptation into an engine of endless rebirth, anchored by Ratadrabik of Urborg turning your legends into compliant Zombies. When you cast Nazgûl, the Ring tempts you to make it legendary—meaning Ratadrabik of Urborg's static replacement effect is primed to copy it the moment it hits the graveyard. By feeding that legendary Nazgûl to Woe Strider's sacrifice ability, you trigger Ratadrabik of Urborg to spawn a fresh, non-legendary 2/2 Zombie copy that immediately restarts the process by entering the battlefield, letting Woe Strider filter your draws with infinite scrys along the way.