Aenwyn, The Created

Aenwyn can't be countered.
{1}{b/g}{b/g}{t}, Sacrifice an elf and a rat: Put X 1/1 black and green Elven Rats on the battlefield where X is the number of Rats and Elves you control.
{2}{b}{b}{g}{g}: Until your next upkeep, Rats you
control have Deathtouch or Elves you control have:
When this creature dies draw a card. (Activate this ability only any time you could cast a sorcery.)