The 'excess damage' clause is a funny way of saying this is a one-way fight spell with trample, letting you clear a creature out of the way and send all the extra damage at that creature's controller
This ability is so powerful because it's meaningful at any stage of the game, whether you need more mana to ramp out the rest of your hand or more cards to finish off your opponent
Pokmon TCG's Twilight Masquerade expansion brings Scarlet & Violet DLC to the card game Ogerpons four masks each get their own ex card, alongside Okidogi, Munkidori and Fezandipiti
Of course, I assume that most experienced players who glance over these definitions are going to find things they mostly already know
The new ones revealed so far are pretty good
Surge's Strategy + Island Amulet combo, this wasn't possible on the first turn, but it was a powerful effect that was banned to get rid of that type of deck forever