From any season.
Vote by replying.
I'll make a list.
The list so far:
4 5-08 Hardhome
3 6-09 Battle of the Bastards
2 6-10 The Winds of Winter
1 6-05 The Door
1 4-08 The Mountain and the Viper
1 1-09 Baelor
1 2-09 The Rains of Castamere
1 4-09 The Watchers on the Wall
1 4-01 Two Swords
1 2-09 Blackwater
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Every episode with arya in it.