[BUG] Theros gods are removed from combat if turned into a creature through an effect


In this game, [[Thassa, God of the Sea]] attacked multiple turns after being turned into a creature by [[Zur, Eternal Schemer]]'s ability. But immediately after attacking, she was removed from combat. I suspect that Thassa's static ability is checked during state-based actions, making her not a creature and removing her from combat, and then Zur's effect is checked, turning her back into a creature.

Reproduce the interaction between Thassa, God of the Sea, Zur, Eternal Schemer, and the effect that turns Thassa into a creature. Start by comparing the creature status immediately after attacking with the state-based-action handling described in the report. Done means Thassa remains in combat when the effect still makes her a creature.

Written by the indexing model from the issue text.