Does hiding a card start a chain, and who gets priority first when the topmost element on the chain resolves?

Ruling: Hiding a card does not start a chain and is not considered "playing a card." When the topmost item on the chain resolves, the owner of that item receives priority first.

Sequence:

• The topmost item on the chain resolves
• The owner of that resolved item receives priority first
• That player can add items to the chain or pass priority
• This repeats until everything on the chain is resolved

Nuances:

• Players can continue adding reactions to the chain after the chain has started, as long as they have priority