Loki's line "We die with the dying. We're born with the dead." comes from T.S. Eliot's poem "Little Gidding." The poem's main themes are time and redemption, themes shared with this show.
Loki's line "I have wasted time and now doth time waste me" comes from William Shakespeare's tragic play "Richard II." The line is said by Richard II, who ruled England badly and consequently was deposed and taken prisoner.
Loki's horns in the helmet have the same pattern as the He Who Remains' Citadel at the End of Time.
Loki repeating the same moment in time over and over is similar to the plot of 'Groundhog Day.' The star of that film, Bill Murray, appears in 'Ant-Man and the Wasp: Quantumania,' which features appearances by two variants of He Who Remains (Kang the Conquerer and Victor Timely) as well as Loki and Mobius.