Lita Glasswing, Astute Advisor

Flash, flying
When Lita Glasswing, Astute Advisor enters the
battlefield, if an opponent controls more lands
than you, create a number of Treasure tokens
equal to twice the difference.
Sacrifice each artifact you control: Return Lita
Glasswing to your hand.
"According to article 6.2.8, you owe us ..."