This is a bad joke! Why is Sky Mother Aviana so much stronger than Rustwix??? Sky Mother legendaries only cost 1 mana, while Rustwix legendary minions are 7, 8, 9, or 10 mana! Plus Sky Mother Aviana shuffles 10 …X …TEN legendaries into your deck, while Rustwix only shuffles 3!!! Sky Mother Aviana also has +1 health more than Rustwix!
Envoy Rustwix:
Cost: 5 Mana
Damage: 5
Health: 4
Deathrattle: Shuffle 3 random Prime Legendary minions into your deck.
Sky Mother Aviana:
Cost: 5 Mana
Damage: 5
Health: 5
Battlecry: Shuffle 10 random Legendary minions into your deck. They cost (1).