Will, Sparker

Whenever you cast an instant or sorcery spell,
create a 0/1 red Kobold of Kher Keep token
At the beginning of your end step, if three or
more kobolds died under your control this turn,
Put a blaze counter on target land without a blaze
counter on it. As long as that land has a blaze
counter on it, it has "At the beginning of your
upkeep, this land deals 1 damage to you."
(The land continues to burn after Will
has left the battlefield.)