Thestalo the Firestorm Monarch

Prowess
Tribute 1
When you cast this spell you can sacrifice a creature, this card costs {2} less.
When Thestalos the Firestorm Monarch enters the battlefield Discard 1 random card from target players hand,or if tribute wasn't paid then look at their hand and discard a card of your choice instead, then, if it was a Creature Card, inflict damage to your opponent equal to its original Mana cost.