Do multiple instances of Deflect stack, requiring an opponent to use multiple power to target a character?

Ruling: Yes, multiple sources of Deflect do stack, requiring the opponent to spend additional power for each instance to target that character.

Nuances:

• Spirit Refuge specifically prevents multiple instances of itself from creating this scenario (it cannot create stacking Deflect on its own)
• If future cards create multiple Deflect instances from different sources, they would stack like Assault or Shield