Then put X +1/+1 counters on Siegfried, where X is twice the number of creature cards in your graveyard.
While you dont need the in-depth knowledge of a judge, you should be both familiar with and up to date on the following aspects of Magic: The Gathering : Rules of how to play The sanctioned formats promoted by WotC (Commander, Standard, Pioneer, etc.) Top decks, strategies, and cards within sanctioned formats This will help you not only understand why certain cards are desirable compared to others, it will also hone your instinct for what might make a good card in the future
Siegehorn Ceratops Siegehorn Ceratopss best feature is to be a 2-drop dinosaur that can grow into a 4/4, 6/6, or bigger
My biggest miss in the list of best cards from Modern Horizons 3 was Phelia, Exuberant Shepherd, which turns out to be pretty nice in an aggro shell, and this card may very well go in that deck