Pre-TMT, turtles were characterized with high toughness, so defender/toughness payoffs like Jaws of Defeat, Felothar the Steadfast, and Arcades, the Strategist help your turtles to maximize their potential
The mana base is largely untouched, as thats usually dependent on what you own
If you've ever wondered what your collection is worth or spent twenty minutes jumping between set numbers and card names to price a single card, this saves that friction
If your opponent moves a card(s) out of either GY (except during the Damage Step): You can Special Summon from your Extra Deck, 1 "Exosister" Xyz Monster using this face-up card you control as material
Now that MTG Universes Beyond sets are Standard-legal, this category has merged with regular expansions somewhat
Including cards from the D&D sets that allow you to roll a D20 increase your chances of activating all its triggered abilities and fits the theme of a more chaotic deck