Natsu, Fire Dragon Slayer

Haste, Protection from Red, Protection from Dragons.
{2}{r}, {t}: Natsu, Fire Dragon Slayer deals damage equal to the number of Mountains you control to target creature or player. If you use this ability to deal damage to a Dragon creature, you may pay {0} rather than pay the ability cost.
Sacrifice a Red permanent: Regenerate Natsu, Fire Dragon Slayer.