Sensei's Divining Top + Ugin, the Ineffable + Fateful Discovery

Sensei's Divining Top

Ugin, the Ineffable

Fateful Discovery

How it works

1. Cast Sensei's Divining Top by paying 0 due to Ugin, the Ineffable.
2. When Sensei's Divining Top enters, Fateful Discovery triggers.
3. Holding priority, activate Sensei's Divining Top by tapping it, causing you to draw a card and put Sensei's Divining Top on top of your library.
4. Resolve the Fateful Discovery trigger, causing you to draw Sensei's Divining Top from your library
5. Repeat

This clever loop turns a modest artifact into an endless engine by leaning entirely on cost reduction and clever timing. With Ugin, the Ineffable discount actively making your colorless spells free, you can cast Sensei's Divining Top for zero mana over and over again. As each new copy enters, Fateful Discovery triggers to draw you a card, but you can respond by tapping the Top to draw and tuck itself away just in time for that same triggered ability to scoop it right back into your hand.