Elemental Eruptor

Whenever an elemental enters the battlefield
under your control, Elemental Eruptor deals 1
damage to each opponent.
Whenever an elemental attacks under your
control, you may pay {r}. If you do, Elemental
Eruptor deals 1 damage to each opponent.
{1}{r}: Create a 1/1 Meteor Elemental creature
token with haste. Sacrifice it at the beginning
of your next upkeep.