Charkonian, Stoneforce Acolyte

Vigilance
When Charkonian, Stoneforcer attacks, it gains X Power, where X is the number of different colored Basic Lands its owner controls between Plains, Forests, and Mountains. If the number is 3, double its power instead.
When Charkonian, Stoneforcer blocks a creature it gains X Toughness, where X is the number of different colored Basic Lands its owner controls between Plains, Forests, and Mountains. If the number is 3, double its Toughness instead.