This loop turns a simple land drop into an engine of endless multiplication by exploiting the interplay between enters-the-battlefield replacement effects and land-based token generation. With Archelos, Lagoon Mystic ensuring that your lands enter the battlefield untapped, playing Golgari Rot Farm triggers both its own bounce ability and Springheart Nantuko's landfall ability simultaneously. While those triggers wait on the stack, you can tap Golgari Rot Farm for mana to pay for the Nantuko's token-copy cost, creating a brand new copy of Oracle of Mul Daya. Thanks to the extra land plays granted by the original Oracle and its freshly minted clones, you can simply replay Golgari Rot Farm from your hand over and over again to generate an infinite army of creatures and landfall triggers.