When mulliganing, the cards to be prioritized are Uta, Benn Beckman, and Edward Newgate because they are the main cards that set up the decks early to mid-game strategy
With that in mind, this is a good place to introduce the idea of converted mana cost or CMC
Saurian reprints of both Abundance and Hardened Scales enchantments show up in the Tyranid Swarm deck
The earlier you play Mystic Remora (ideally on turn 1 or 2), the more cards youll draw because players wont be able to pay the mana for all the ramp spells they're likely to deploy
Without the many strong artifacts like Caltrops, Al-Abara's Carpet, Horn of Deafening, Farseek Mask, Leonin Bladetrap and more, wed have a great idea for punishing attackers or keeping yourself safe with very few tools to actually make it work