Ohran FrostfangOhran Frostfang makes your attackers deadly, and any that go unblocked and deal combat damage to an opponent draws you a card
Wrong energy symbols, or energy symbols the wrong size
In terms of artwork and characters, the Ruby/Sapphire deck was the clear winner for me
And, even worse, sometimes they intentionally print cards that are toned down because they are worried about pushing the envelope, like most of the split cards in Ravnica and the Aftermath cards in Amonkhet
[10] During Kaiba's Duel against Noah, the former explained that his Deck Master's ability allowed him to Summon LIGHT-Attribute monsters with 1 less Tribute
Apply generic due diligence: verify the supplier is a registered company, compare their price against Japanese marketplace asks (far-below-street pricing is the classic red flag), insist on tracked carrier shipping, pay by methods with a dispute path on early orders, confirm they publish real shipping and claims policies, and start with a small test order before scaling