The Stampede

When The Stampede enters the battlefield, put {x} many 1/1 Dino tokens onto the battlefield.
{t}{x}{r}{g}{r/g} All {x}of your stampede Dino tokens
gets a +1/+1 counter until end of turn.
{t} Sacrifice all of your stampede Dino tokens.
Gain life equal to the amount of stampede Dino
tokens sacked.