Andes, Expansionist Ruler

When Andes, Godwilled Expansionist enters the battlefield, create X 1/2 white Colonizer creature tokens with first strike, where X is the number of nonbasic lands you tapped to cast Andes.
At the beginning of your upkeep, if you control
10 or more nonbasic lands, you may pay {w}{r}{g} and tap a Colonizer token you control. If
you do, you gain control of target nonbasic land
an opponent controls until Andes leaves the battlefield.