Jacob, Multiplicative Botanist

When Jacob, Multiplicative Botanist enters the
battlefield, create X 0/1 green Plant tokens.
Sacrifice a Plant token: Choose one —
•Put a +1/+1 counter on Jacob, Multiplicative Botanist and on each Plant token you control.
•Double the number of +1/+1 counters on any
number of Plant tokens you control
Will you be my groomsman?