Since this is both a sacrifice outlet and puts a land into play, all you need is a card that makes tokens on landfall, like Scute Swarm or Sporemound, an Intruder Alarm or Retreat to Coralhelm for untapping, and a Karoo land to draw your entire deck and get enough landfall triggers to take out the table with effects like Retreat to Hagra or Ruin Crab
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However, her ability Gathering Forces, allows the player to move any number of their characters to the same location, collecting 1 Lore point for each character moved, whenever this card is played
The value of X is locked in after you choose targets but before you pay costs for Urgent Necropsy
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