Lux Artillery

Whenever you cast an artifact creature spell,
it gains sunburst. (It enters with a +1/+1 counter
on it for each color of mana spent to cast it.)

At the beginning of your end step, if there are thirty or more counters among artifacts and creatures you control, this artifact deals 10 damage
to each opponent.

Prayer has power, but I cannot deny fire does, too.
-Archmagos Cortiko