The Fall of Jeska

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
1: Put a +1/+1 counter onto target creature it gains first strike and is red
2: Put a -1/-1 counter onto target creature it gains deathtouch and is black
3: Target creature becomes a 5/5 God Avatar that is all colors and has protection from all colors, it loses all other sub-types.