Golbez, Crystal Collector + Repository Skaab + Capture of Jingzhou

Golbez, Crystal Collector

Repository Skaab

Capture of Jingzhou

How it works

1. Cast Capture of Jingzhou by paying its mana cost, causing you to take an extra turn after this one.
2. Cast Repository Skaab by paying 3.
3. When Repository Skaab enters the battlefield, its first ability triggers, causing it to exploit itself. Its second ability then triggers, returning Capture of Jingzhou from your graveyard to your hand.
4. At the beginning of your end step, Golbez's second ability triggers, returning Repository Skaab from your graveyard to your hand.
5. Repeat each turn.

This ingenious loop allows you to take infinite turns by constantly recycling your spells right out of the graveyard. It all starts by casting Capture of Jingzhou to earn yourself an extra turn, followed by Repository Skaab to trigger an exploit loop. When Repository Skaab enters the battlefield, you choose to exploit it, triggering its second ability to pull Capture of Jingzhou right back to your hand. Meanwhile, the presence of Golbez, Crystal Collector anchors the whole engine by watching your end step; once the turn winds down, Golbez's triggered ability pulls Repository Skaab safely out of the graveyard and back into your hand, ready to start the cycle all over again.