Chicken

{1}{t}: Create a white Artifact Egg token with: When this artifact enters the battlefield or at the begging of your upkeep, you may attach it to target creature you control. Sacrifice Egg: deal 1 damage to target creature that blocked was was blocked by equipped creature.
{r}{t}: Sacrifice this creature: Create a colorless food token with {2}{t}: Sacrifice this artifact: You gain 3 life or target creature that was dealt damage this turn takes 3 less damage instead.