Kaguya, Heart of Elements

If Kaguya is your commander, she is white
and black in addition to her other colors.
Sunburst — Whenever you cast a spell, for each
of that spell's colors, create a 1/1 Elemental
creature token that's that color.
At the beginning of each end step, sacrifice an
Elemental. It deals damage equal to its power
to you and to any other target.