Tangleroot + Words of Wind + Memnite + Soul of the Harvest

Tangleroot

Words of Wind

Memnite

Soul of the Harvest

How it works

1. Cast Memnite by paying 0.
2. Tangleroot triggers, adding .
3. When Memnite enters the battlefield, Soul of the Harvest triggers.
4. Holding priority, activate Words of Wind by paying 1, replacing the next card you draw.
5. Resolve the Soul of the Harvest trigger, causing you to return Memnite from the battlefield to your hand, and causing each opponent to return a permanent they control from the battlefield to your hand.
6. Repeat.

This engine relies on Memnite's completely free casting cost to set off a relentless chain reaction of triggers. Every time you drop the artifact creature, Tangleroot provides the green mana needed to pay for Words of Wind's activation, which cleverly converts your upcoming card draws into a bouncing board wipe that strips your opponents of every single permanent they control. Meanwhile, Soul of the Harvest sits back as the primary engine piece, providing the constant source of card draws that Words of Wind intercepts while repeatedly returning Memnite safely back to your hand so the loop can start all over again.