When a unit with 'When I move' attacks a defender with 'When I attack' and 'When I defend' triggers, what is the correct order for these triggers to resolve?

Ruling: 'When I move' triggers resolve completely before the showdown begins. Once resolved, the showdown starts with attacker triggers going on the chain first, then defender triggers, creating the initial chain.

Sequence:

• 'When I move' trigger activates and resolves completely before showdown
• Showdown begins and attacker 'When I attack' triggers go on the chain first (targets must be declared)
• Defender 'When I defend' triggers go on the chain next (defender picks order if multiple, targets declared)
• Attacker gets priority to play spells
• If pass, defender gets priority to play spells
• Chain resolves LIFO (last in, first out)
• After initial chain resolves, attacker gets focus and priority

Nuances:

• Each item on the chain can be reacted to before resolving
• If defender has multiple triggers, they choose the order those triggers go on the chain