MTG >Combos >Ashnod's Altar +Phyrexian Marauder +Ugin's Conjurant +Colfenor, the Last Yew +

With Colfenor on the battlefield, cast Phyrexian marauder with X = 1 Sacrifice Phyrexian Marauder with Ashnod's Altar to add two mana Cast Ugin's Conjurant for X = 1 and sacrifice it to add two mana with Ashnod's Altar Colfenor's ability will trigger, return Phyrexian marauder to your hand Cast Phyrexian Marauder with X = 1 and Sacrifice it to add two mana with Ashnod's Altar Confenor's ability will trigger, return Ugin's Conjurant to your hand repeat the process