If Soulgorger plays Magma Wurm, does the Magma Wurm enter the board before Soulgorger, allowing Soulgorger to enter ready?

Ruling: No. When Soulgorger's ability goes on the chain, Soulgorger is already on board exhausted. There is no window where Magma Wurm would hit the board before Soulgorger.

Sequence:

  • Soulgorger enters the board exhausted
  • Soulgorger's ability goes on the chain
  • Magma Wurm is played and resolves
  • Soulgorger remains exhausted