And, finally, excess damage was defined in Magic's Comprehensive Rules in the Comprehensive Rules changes of February 2021, to clearly define how several excess damage cards from Kaldheim should work
There's a small window for opponents to break even on card advantage, and after that window closes, your deathtouchers, sacrifices, and regular combat turn into so much value that very few black decks should go without it
It does a hell of a lot for a single green mana
(1) If this card is Tribute Summoned: You can banish 1 random card from your opponents hand, and if you do, inflict 1000 damage to them, then, if this card was Tribute Summoned by Tributing a Level 8 or higher monster, you can banish 1 card on the field, and if it is a FIRE or DARK Monster Card, inflict damage to your opponent equal to its original Level x 200
PS Platinum Secret Rare QCSE Quarter Century Secret Rare Kuribandit X DARK Level 3 [ FiendEffect ] ATK 1000 DEF 700 During the End Phase, if this card was Normal Summoned this turn: You can Tribute this card