With 2 Auroras in base, do their end-of-turn triggers go on the same chain or separate chains? Can you play a Deadbloom from the first trigger to a battlefield, then play the second unit to that same battlefield to start a showdown with both units simultaneously?

Ruling: Both Aurora triggers enter the same chain and resolve before any showdown, as showdowns can only start in an open state. You cannot play both units to the same battlefield to start a simultaneous showdown.

Sequence:

• Both Aurora triggers go on the same chain
• First trigger resolves, you play a card (e.g., Deadbloom to a battlefield)
• Second trigger resolves, you play another card
• If the second card is not a Deadbloom, it must be played to base or a battlefield you control
• Since you don't control the battlefield where the Deadbloom was played (it has pending combat), you cannot reinforce there
• The second unit must be played elsewhere

Nuances:

• Showdowns can only be started in an open state, not while a chain is resolving
• You don't control a battlefield that has pending combat on it