Landfall : Whenever a land enters the battlefield under your control, create a 6/2 green and white token creature with hexproof, crew

and "Whenever this creature becomes crewed, it looses hexproof and gains trample".
Whenever a worm creature would deal damage to target player, target land get

"Desertification" counters, where

is equal to the damage dealt. Land with

Desertification counter becomes deserts.