Theusi, the Earth Consumers

Trample, Hexproof, Reach
Earth Consumer, Land Pulverizer 1
You may exile any lands you control, then at your end step you gain {x} life where {x} is the number of lands you've exiled this turn
{p/g}{p/g}{p/r}{p/r}{p/u}{p/u}; Destroy all permanents, then Distribute 10 life evenly among all players, rounding up if needed