Katniss, the Mockingjay

Partner with Peeta, forever Unchanged
When Katniss enters the battlefield, you may
search your library for an artifact with mana
value 3 or less and equip it to her.
Whenever Katniss attacks she gets a kill counter
and you create an animal food token with
{t} sacrifice this token, target creature gets a +1/+1 counter.
If Katniss has 22 kill counters you win the game.