When an opponent plays Gust then Possession on my Red Darius, does Darius enter their base exhausted or ready, and does he see Possession as the second card played?

Ruling: Red Darius enters the opponent's base exhausted because he sees Possession as the second card played on the turn.

Sequence:

• Opponent plays Gust (first card)
• Opponent plays Possession on Red Darius (second card)
• During Possession's resolution, Darius becomes the opponent's unit
• After Possession resolves and counts as played, Darius sees it as the second card played
• Darius enters exhausted

Nuances:

• A card only counts as played and triggers corresponding play effects after it resolves
• Darius becomes the opponent's unit during resolution, which happens before Possession counts as played
• This works the same way as Darius seeing himself if played as the second card