Forum:Need help making a spellcaster deck

Hi, I'm new and I was wondering if I could get help building a deck. I want my deck based around spellcasters since I looked at my deck from when I was 7 and it was just cards from the starter decks. Not sure what magic, trap, and monster cards I need so I'm asking for as much help as I can get.

Also curious as what Spell counters are. thanks for the help