Ertha Jo, Frontier Mentor + Clock of Omens + Sphinx's Disciple + Encroaching Mycosynth

Ertha Jo, Frontier Mentor

Clock of Omens

Sphinx's Disciple

Encroaching Mycosynth

How it works

1. Activate Clock of Omens by tapping it and Sphinx's Disciple, targeting Sphinx's Disciple.
2. Ertha Jo triggers, copying Clock of Omens' ability, targeting Clock of Omens.
3. Resolve both Clock of Omens abilities, untapping it and Sphinx's Disciple.
4. Sphinx's Disciple triggers, causing you to draw a card.
5. Repeat.

This clever loop transforms a humble flying bird into an infinite card-drawing engine by turning your entire board into metal. Encroaching Mycosynth is the silent architect here, granting the artifact type to every nonland permanent you control so that Clock of Omens can effortlessly target and untap your creatures. When you tap Clock of Omens and Sphinx's Disciple to pay for the clock's ability, Ertha Jo, Frontier Mentor steps in to copy it thanks to targeting a creature or player, allowing you to untap both the clock and the sphinx simultaneously. Each time Sphinx's Disciple becomes untapped, its inspired ability triggers to draw you a card, feeding you your entire deck one loop at a time.