If I have Subzero Defenses in my play area and my opponent plays and attacks with an AT-AT and he chooses to destroy my Subzero Defenses, does it trigger my Subzero Defenses and destroy his AT-AT as well? or does the AT-AT destroy it before it can trigger?
AT-AT vs Subzero Defenses
It would be destroyed and unable to trigger.
A bit more info on why that's the case:
The AT-AT's effect happens "after this unit is focused to strike."
Subzero Defenses happens "after its strike resolves."
Resolving a strike has three steps:
1. Choose one of your participating ready units.
2. Focus the unit to strike (i.e. place a focus token on the card).
<<<< AT-AT destroys Sub-zero Defenses here
3. He resolves the striking unit’s combat icons by type.
Strike is resolved (complete)
<<<< Sub-zero Defenses would destroy the striking unit here, if it was still in play
Toggle is correct.