Rototiller ShepherdSolemn Simulacrum Buy + Emeria Shepherd Buy + Phyrexian Altar Buy
With the angel in play, drop the Simulacrum. In response to its ETB trigger, sacrifice it to the altar, gaining a mana and one card draw. When you resolve the land search, look for a plains, which will return the Simulacrum to the field, starting this process again.
In effect, : Draw a card and add one mana of any color. Search your library for a basic land and put it onto the battlefield. If a plains enters the battlefield this way, you may repeat this process.
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