Finetail's Spark

Augment (This spell's casting cost may be paid for
using any colored mana)
Enchant creature
When Finetail's Spark enters the battlefield, it
deals 1 damage to any target equal to the number
of {r} used to cast it.
Enchanted Creature gets +2/+0 and menace.
At the beginning of your upkeep, Finetail's
Spark deals 1 damage to you for every non-red
mana used to cast it.