Anticausal Vestige + Cloudstone Curio + Vizier of Many Faces

Anticausal Vestige

Cloudstone Curio

Vizier of Many Faces

How it works

1. Cast Vizier of Many Faces by paying its mana cost. Choose to have it enter as a copy of Anticausal Vestige.
2. When Vizier of Many Faces enters, Cloudstone Curio triggers, returning Anticausal Vestige from the battlefield to your hand.
3. When Anticausal Vestige leaves the battlefield, it triggers, causing you to draw a card and and put Anticausal Vestige from your hand onto the battlefield.
4. When Anticausal Vestige enters, Cloudstone Curio triggers, returning Vizier of Many Faces from the battlefield to your hand.
5. When Vizier of Many Faces leaves the battlefield, it triggers, causing you to draw a card and put Vizier of Many Faces from your hand onto the battlefield as a copy of Anticausal Vestige.
6. Repeat from step 2.

This clever loop relies on Cloudstone Curio acting as a perpetual bounce engine that continuously alternates your permanents. By casting Vizier of Many Faces as a copy of Anticausal Vestige, you set up an alternating chain of creature types and triggers where entering the battlefield causes the Curio to return the other to your hand. Whenever either of these creatures leaves the battlefield, Anticausal Vestige's leave-the-battlefield ability triggers to draw a card and cheat a permanent onto the battlefield. This lets you endlessly swap the two cards back and forth between hand and play, fueling infinite card draw and near-infinite enters-the-battlefield triggers.