MTG >Combos >Prototype Portal +Ugin's Nexus +Trading Post +

With the imprint ability of

Prototype Portal

exile

Ugin's Nexus

. Pay 5 mana to create a copy of

Ugin's Nexus

on the battlefield. Activate the

Trading Post

's ability, sacrificing the copy to draw a card. Take an extra turn, thanks to the ability of

Ugin's Nexus

. Repeat the loop to play as many turns as you want.