Archaeomancer + Mystic Reflection + Time Warp + Hordeling Outburst

Archaeomancer

Mystic Reflection

Time Warp

Hordeling Outburst

How it works

1. Cast Time Warp by paying 3, granting you an extra turn after this one.
2. Cast Mystic Reflection by paying 1, causing the next creatures or planeswalkers to enter the battlefield this turn to enter as copies of Archaeomancer.
3. Cast Hordeling Outburst by paying 1, creating three token copies of Archaeomancer.
4. Each of the Archaeomancer's ETBs trigger, returning Mystic Reflection, Time Warp, and Hordeling Outburst to your hand.
5. Repeat.