Activate Relic of Legends' second ability by tapping Hajar, adding {B}.
Activate Hajar by sacrificing it, giving legendary creatures you control +1/+0 and indestructible until end of turn.
Activate Kenrith's fifth ability by paying {B}, returning Hajar from your graveyard to the battlefield.
Repeat.

Infinite death triggers

Infinite ETB

Infinite LTB

Infinitely powerful legendary creatures you control until end of turn

Infinite sacrifice triggers

Kenrith, the Returned King

Agatha of the Vile Cauldron

Hajar, Loyal Bodyguard

Relic of Legends

Activate Hajar by sacrificing it.
When Hajar dies, Yomiji triggers, returning Hajar from your graveyard to your hand.
Resolve the Hajar ability, causing legendary creatures you control to get +1/+0 and indestructible until end of turn.
Cast Hajar by paying {0}.
Repeat.

Infinite storm count

Yomiji, Who Bars the Way

Bard Class

Activate Hajar by sacrificing it.
When Hajar dies, Enduring Renewal triggers, returning Hajar from your graveyard to your hand.
Resolve the Hajar ability, causing legendary creatures you control to get +1/+0 and indestructible until end of turn.
Cast Hajar by paying {0}.
Repeat.

Enduring Renewal

Activate Hajar by sacrificing it.
When Hajar dies, Yedora triggers, returning Hajar from your graveyard to the battlefield face-down as a Forest land.
When Hajar enters the battlefield, Zimone triggers.
Holding priority, activate Hajar by tapping it, adding {G}.
Resolve the Zimone trigger, turning Hajar face-up.
Resolve the Hajar ability from step 1.
Repeat.

Infinite green mana

Infinite landfall triggers

Zimone, Mystery Unraveler

Yedora, Grave Gardener

Morophon, the Boundless

Activate Hajar by sacrificing it.
When Hajar dies, Luminous Broodmoth triggers, returning Hajar from your graveyard to the battlefield without a flying counter on it due to Solemnity.
Resolve the Hajar ability.
Repeat.

Solemnity

Luminous Broodmoth

Cast Hajar by paying its mana cost if it is in your hand. Otherwise, activate Tayam by paying {3} and removing three counters from creatures you control, causing you to mill three cards and return Hajar from your graveyard to the battlefield with a vigilance counter on it.
When Hajar enters the battlefield, Metastatic Evangel triggers, causing you to put a +1/+1 counter on Cryptic Trilobite and Basking Broodscale and a vigilance counter on Hajar.
Basking Broodscale triggers, creating a 0/1 Eldrazi Spawn creature token that enters with a vigilance counter on it.
Activate Cryptic Trilobite by removing a +1/+1 counter from it, adding {C}{C} that can only be spent to activate abilities.
Activate the Eldrazi Spawn by sacrificing it, adding {C}.
Activate Tayam by paying {3}, removing both vigilance counters from Hajar and another counter from a creature you control.
Holding priority, activate Hajar by sacrificing it.
Resolve the Tayam ability, causing you to mill three cards and return Hajar from your graveyard to the battlefield with a vigilance counter on it.
Repeat from step 2.
Repeat.

Combos with "Hajar, Loyal Bodyguard"