Amnian Infiltrator

Dethrone (Put a +1/+1 counter on this creature whenever it attacks a player with the most life or tied for the most life).
Whenever Amnian Infiltrator attacks a player with the most life or tied for the most life, spy 1 on that player (To spy 1, look at the top card of that player's library, then put it on the top or bottom of that player's library).