Enchantress, for example, makes your opponent pay for challenging her as she hits back for three strength
The floor of this card is already pretty good for four mana, but when you factor in wheel effects and Underworld Breach, it gets pretty good pretty quick
Fortunately, Duskmourn pulled it off almost perfectly, with an ode to modern horror that was also an absolute thrill to play
Hullbreacher + Vendilion Clique / Ertai Resurrected Hullbreacher can be used to deny draws from Vendilion Clique or Ertai Resurrected, creating a one-sided advantage
Its a three mana tutor, which has immediate impact, and once stationed, it becomes a sizeable body to attack with, while offering safe passage for you other main characters
The rarity of these basics in large numbers, along with the demand for basics (hey we all need them) make acquiring these basic lands a journey in and of itself