Voltaic Construct + Mycosynth Lattice + Viridian Joiner

Voltaic Construct

Mycosynth Lattice

Viridian Joiner

How it works

1. Activate Viridian Joiner by tapping it, adding at least 3.
2. Activate Voltaic Construct by paying 2, untapping Viridian Joiner.
3. Repeat

This clever assembly transforms the battlefield into a harmonious workshop where Viridian Joiner becomes an absolute powerhouse. By blanketing the entire board, Mycosynth Lattice ensures that Viridian Joiner—and indeed every other permanent in play—is treated as an artifact, effectively granting Voltaic Construct the legal target it needs to untap our mana producer. Once the Joiner's power is high enough to produce surplus mana, you simply funnel a portion of it into Voltaic Construct to untap the elf, leaving you with an endless loop that generates infinite green mana.