If this card is Tribute Summoned: Discard 1 random card from your opponent's hand, then, if it was a Monster Card, inflict damage to your opponent equal to its original Level x 100.
Rulings
Individual Card FAQs
If you Tribute Summon "Thestalos the Firestorm Monarch" successfully, and your opponent discards a monster like "Outstanding Dog Marron" or "Regenerating Mummy", you still inflict damage because the monster was discarded to the Graveyard (even though it doesn't remain there).
If "Banisher of the Light" is face-up on the field, no damage is inflicted because the card is not discarded to the Graveyard.
FIRE|
Level 6|[ Pyro / Effect ]
ATK 2400|
DEF 1000