When this creature enters, earthbend 1, then earthbend 1. (To earthbend 1, target land you control becomes a 0/0 creature with haste that's still a land. Put a +1/+1 counter on it. When it dies or is exiled, return it to the battlefield tapped.)
Whenever this creature attacks, each opponent loses X life and you gain X life, where X is the number of creatures you control with +1/+1 counters on them.
Dai Li Agents has 2 listed printings; the most valuable is the Borderless printing from TLA at US$0.28 on TCGplayer's market price. Prices below are the cheapest in-stock listing in the United States.
Affiliate links: as an eBay Partner Network affiliate and a TCGplayer affiliate, MTG Compare earns from qualifying purchases — at no extra cost to you.
