Can Temporal Portal add Repeat to a card that already has Repeat, allowing it to invoke 3 times total?

Ruling: Yes, Repeat can stack. You can use Temporal Portal to add Repeat to a card that already has Repeat, allowing it to invoke 3 times total.

Sequence:

• Tap Temporal Portal to add Repeat to the card
• Play the card (e.g., Bellows Breath) which already has Repeat
• The card invokes 3 times total (once normally, plus two Repeat triggers)

Nuances:

• Repeat stacks similarly to other keywords like Shield and Deflect