Combo result
Infinite colorless mana. Prerequisites
Teshar, Mishra's Bauble, and Ashnod's Altar on the battlefield. Myr Retriever in graveyard.
Teshar, Ancestor's Apostle + Myr Retriever + Blasting Station
Combo result
Infinite mill. Infinite colored mana. Prerequisites
All permanents on the battlefield, with Blasting Station and Lotus Petal untapped. Or Myr Retriever in the graveyard and Lotus Petal in hand, and other permanents on the battlefield.
Teshar, Ancestor's Apostle + Myr Retriever + Grinding Station
Combo result
Mill your opponents' libraries. Prerequisites
Teshar, Mishra's Bauble, and Grinding Station on the battlefield. Myr Retriever in graveyard.