World's Best Deep Core Driller

Landfall —Whenever a land enters the battlefield
under an opponent's control, put an oil counter
on The World's Best Deep Core Driller.
{2}{t} Sacrifice The World's Best Deep Core
Driller and create a 1/1 Roughneck creature
token with menace for each oil counter attached.
"Well I'm only the best because I work with the best."