This ingenious self-sustaining loop relies on Jungle Basin's own entry trigger to sacrifice itself, which Haru, Hidden Talent immediately circumvents by returning the land from the graveyard to the battlefield whenever the earthbent land dies or is exiled. Each time Jungle Basin re-enters, Retreat to Emeria triggers its landfall ability to spawn a 1/1 white Kor Ally token, which in turn fuels Haru, Hidden Talent's earthbend ability to animate Jungle Basin anew. Because Jungle Basin's sacrifice requirement is bypassed by Haru, Hidden Talent's resurrection, you can repeat this sequence indefinitely to flood the board with infinite creature tokens, landfall triggers, and creature enters-the-battlefield effects.