How many times can you use the repeat mechanic on a single card?

Ruling: You can pay the repeat cost once per instance of the repeat keyword on a card. A card with one instance of repeat can be repeated once; a card with multiple instances of repeat (either printed or granted by other effects) can be repeated multiple times.

Sequence:

• When finalizing a spell to the chain, you choose whether to pay the repeat cost(s)
• You must declare all repeats at activation; you cannot pass priority and then decide to repeat later
• You pay the cost for each instance of repeat separately

Nuances:

• The number next to repeat is the cost to pay, not the number of times you can repeat
• Multiple instances of repeat are formatted as separate lines (e.g., "repeat :1Energy:" on one line, "repeat :1Energy:" on another line)
• Cards can gain additional instances of repeat from other card effects