Is Vi's Champion Unit effect an activated ability that can be used multiple times per turn at base speed, and does it grant Might each time it's activated?

Ruling: Vi's effect is an activated ability that can only be used at base speed (during your turn, outside of showdowns). It does not specify "once per turn," so it can be activated multiple times as long as you can recycle cards from your trash.

Sequence:

• Activate Vi's ability during your turn at base speed
• Choose a card from your trash to put at the bottom of your deck
• Vi gains 1 Might
• Repeat as many times as desired (if you have cards in trash)

Nuances:

• The ability does not exhaust Vi, so there's no limit beyond having cards in your trash to recycle
• Gaining Might is not the same as getting a "Buff" - Vi can gain Might multiple times without restriction
• This ability cannot be used on your opponent's turn or during showdowns
• If you have 2 Vi units out, only the one that activated the ability gets the Might boost