Gaia Soul the Combustible Collective (RDS-EN028) [Rise of Destiny]

You can tribute up to 2 Pyro-Type Monsters on your side of the field. If you do this, increase the ATK of this monster by the number of Tributed monsters x 1000 points. When this card attacks with an ATK that is higher than the DEF of your opponent's Defense Position monster, inflict the difference as Battle Damage to your opponent's Life Points. Destroy this card during the End Phase.