Infinite landfall triggersInfinite tapped copies of a specific landInfinite tapped Mountain tokensInfinite tapped Island tokensInfinite tapped Forest tokensInfinite tapped Plains tokensInfinite tapped Swamp tokens
How it works
Activate Prototype Portal by paying 0 and tapping it, creating a token copy of Mistvault Bridge.
When Mistvault Bridge enters the battlefield, Tiller Engine triggers, untapping it.
Activate the Mistvault Bridge token by tapping it, adding .
Activate Filigree Sages by paying , untapping Prototype Portal.
Repeat.
This cunning engine revolves around the mana-producing artifact-land Mistvault Bridge acting as both the replicated subject and the fuel for the loop. With Power Artifact reducing Filigree Sages' untap ability to just {1}{U}, tapping your mana source to help pay for the Sages lets you continuously untap Prototype Portal. As the Portal churns out fresh copies of Mistvault Bridge, Tiller Engine steps in with its crucial triggered ability to instantly untap the newly entering land, ensuring it is immediately ready to tap for blue mana and keep the cycle spinning infinitely.