Voltaic Construct + Kami of Whispered Hopes + Transmogrifying Licid

Voltaic Construct

Kami of Whispered Hopes

Transmogrifying Licid

How it works

1. Activate Kami of Whispered Hopes by tapping it, adding at least 3.
2. Activate Voltaic Construct by paying 2, untapping Kami of Whispered Hopes.
3. Repeat

This ingenious engine turns a modest tapping loop into an infinite mana generator by supercharging the growth of Kami of Whispered Hopes. While Voltaic Construct handles the heavy lifting of untapping your artifact creature, it is Transmogrifying Licid that secretly unlocks the whole combination by permanently turning the Kami into an artifact creature in addition to its other types. Because Kami of Whispered Hopes naturally replaces and amplifies the +1/+1 counters put upon it, tapping it for mana with its own ability while looping untaps lets you generate an ever-growing surplus of colored mana.