Fetid Broodmother

Fetid Broodmother enters the battlefield with X Brood counters.
Fetid Broodmother's toughness is equal to the number of Brood counters on it.
{x}{x}{b}: Put X Brood counters on Fetid Broodmother.
When Fetid Broodmother dies, put X 1/1 black and red Darkspawn tokens with Wither onto the battlefield under your control, where X equals the number of Brood counters on Fetid
Broodmother.