Does a trigger effect get added to the current chain or to the next chain?

Ruling: Trigger effects are added to the existing chain as the top item. There can only ever be one chain at a time.

Sequence:

• When a trigger occurs while a chain is in progress, it is added to the current chain as the top item
• If multiple triggers occur simultaneously, they are put on the chain in turn order
• Each player orders the triggers they control as they like

Nuances:

• Once a chain fully resolves (all items complete), a new action can start a new chain
• During showdowns, after an action resolves and its chain is done, the next action starts a new chain