As a Death card, this can generate limited exponential attack growth. Schrödinger's Cat run from the mark alone, plus Graveyards (hey, a use for those!) and a couple of these. Fill the field with your Cat, then poke one Elite Skeleton with this, boom, 42 more attack power distributed across 21 creatures (23 minus the dead Skeleton and the Cat). Only balancing factor is that it's a spell and limited to 6 uses, though in this case I am not sure that's enough.