Jakiro, ColdFlame Disaster

When this card first enters the battlefield it has Frosttouch, the second turn it is out it has Blazetouch, and so on.
Frosttouch(Whenever this creature deals damage to a creature, tap that creature. It doesn't untap during its controller's next untap step.)
Blazetouch(Whenever this creature deals damage to a creature, it deals the difference between it's power and defending creature's toughness to another creature the opponent controls.)