The one video I watched prior on centering was about sports cards and what they were looking for was misalignment on the card so for instance letters lined up in the wrong spot or a white space where the guys elbow should have been but in the layers they print/stamp in it was misaligned

The 26 excess damage cards that you can play in Commander are: Aegar, the Freezing Flame Bottle-Cap Blast Contest of Claws Cramped Vents Fall of Cair Andros Flame Spill Gandalf's Sanction Goblin Negotiation Hell to Pay Lacerate Flesh Maarika, Brutal Gladiator Magmatic Galleon Megatron, Tyrant / Megatron, Destructive Force Nahiri's Warcrafting Overclocked Electromancer Pigment Storm Ram Through Ravenous Tyrannosaurus Rith, Liberated Primeval Toralf, God of Fury / Toralf's Hammer Torch the Witness Unleash the Inferno Vikya, Scorching Stalwart Windswift Slice The five digital-only Alchemy cards are: Best Excess Damage Cards Ram Through Ram Through, originally from Ikoria , was one of the first excess damage cards printed, and is the most popular in casual Commander decks
The next time two target creatures would deal damage, you draw a card
8 Effect Veiler One of the few monsters to remain part of the meta game, Effect Veiler is a Spellcaster-type Tuner monster that first appeared through 2010's Duelist Revolution booster pack