At the beginning of your upkeep and whenever you cast a white spell, put a charge counter on Shrine of Loyal Legions.
![3](/Handlers/Image.ashx?size=small&name=3&type=symbol)
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![Tap](/Handlers/Image.ashx?size=small&name=tap&type=symbol)
, Sacrifice Shrine of Loyal Legions: Create a 1/1 colorless Phyrexian Myr artifact creature token for each charge counter on Shrine of Loyal Legions.