Katon: Goka Mekkyaku

At the beginning of your upkeep, you gain {e}{e}
{e}{e}{e}{e}: Katon: Goka Mekkyaku deals 6 damage
to target creature or player.
Overload{10}{e}{e}{e}{e}: Replace all instances of
'6' with 15
Fire Style: Majestic Destroyer Flame!