That's hard to beat against the cost of home printing or buying singles you only want to test
The Unfought: Unless one counts the Duel between Yuya and Yuri, Zarc is the first main antagonist of a Yu-Gi-Oh series not to duel the main protagonist (Yuya eventually retaking control and sabotaging his final turn comes the closest to this)
Effects from that attack are then activated and damage may be dealt on the defending Pokmon, which may modify based on the defender Pokmon's type weakness or a resistance policies, and/or by any other effects on the defending Pokmon
Sure, a lot of decks would want STE over other cards, such as a Landline deck or a Snake deck, but the fact is that STE dominated Standard and our hearts for a while, but it never really stood the test of time
As long as you punch face
Slime Against Humanity will already be your primary source of creatures, and if you're willing to play without instants and nonland permanents, you'll be able to access Umori as a 101st card