The Minecrawler Queen

Defender, Deathtouch, Hexproof
Minecrawlers get +2/+0 and
"{t}sacrifice this creature, generate {g} or {b}.
{2}{b/g}{b/g}{t}: Create a 3/3 green Minecrawler
creature Token.
In the darkest and deepest pit of the old mine,
this ancient creature breeds relentlessly.