What does Annie specifically do? Does she get 2 extra runes at the end of her turn?

Ruling: Annie does not give you 2 extra runes. At the end of your turn, she creates a trigger where you choose 2 runes, and when that trigger resolves, those 2 runes will become ready if they are exhausted.

Sequence:

• At end of turn, Annie creates a trigger
• You choose 2 runes
• When the trigger resolves, those 2 runes become ready if they are exhausted

Nuances:

• This happens even if you only have 1 rune on the board
• The specific word used to gain additional runes is "channel" (which is different from what Annie does)