Shishkin's Bear Portrait

Painting nature needs patience - At the beginning
of your upkeep, if you have one bear under your
control, you may put a charge counter on
Shishkin's Bear Portrait.
{t}, Sacrifice Shishkin's Bear Portrait:
Add X 2/2 Bear onto the battlefield under
your control, where X is the number of
charge counters on Shishkin's Bear Portrait.