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I got the idea from the Ultimatum cards. I have some older elf cards like the llanowar druid, which will untap all of your forest, but with the prismatic omen out, all of your lands will become forest, so they all untap. You can play the ultimatum cards for five with the fist of suns out. This will let you play them for only five instead of seven. The sterling grove and tutor will help you grab the sun and omen out quickly. Regrowth to gain that protection back and keep the deck flowing.
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