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When Edgar Markov decides to join the battle, he comes out the gates swinging, immediately attacking for 5 and buffing your Vampire army in the process -- the perfect follow-up to all the free tokens he's been adding to your army
Good trap cards are those that can: prevent attacks like Mirror Force, negate summons like Solemn Warning, negate spell/trap activations like Wiretap, negate effects like Breakthrough Skill or Fiendish Chain, remove monsters like Ring of Destruction or Compulsory Evacuation Device, and prevent your opponent from making plays like Vanity's Emptiness
The game is perfect for ages 8 and up
While you can find plenty of good options if you run Delney in the command zone, there are even more to choose from if you add other colors
Arna Kennerd, Skycaptain is one such legend, bringing back the 'modified' keyword from Kamigawa: Neon Dynasty in an interesting new color combination: Esper (or white-blue-black)